18 avril 2024 | International, C4ISR

Sage Geosystems geothermal initiative for US Army

Sage Geosystems, a US-based geopressured geothermal systems (GGS) developer, is set to commence a new geothermal initiative for the US Army.

https://www.army-technology.com/news/sage-geothermal-us-army-diu/

Sur le même sujet

  • LOCKHEED MARTIN ANNOUNCES $100 MILLION VENTURE FUND INCREASE

    11 juin 2018 | International, Aérospatial

    LOCKHEED MARTIN ANNOUNCES $100 MILLION VENTURE FUND INCREASE

    BETHESDA, Md., June 7, 2018 /PRNewswire/ -- Lockheed Martin (NYSE: LMT) announced the doubling of its venture capital fund to $200 million and recent investments in early-stage companies focused in the areas of autonomy and advanced manufacturing. "Our focus is on finding and investing in companies developing cutting-edge technologies that will grow our business and disrupt our industry," said Chris Moran, vice president and general manager of Lockheed Martin Ventures. "We're developing long-term strategic partnerships with companies and helping them navigate through the early stages of product development while leveraging our decades of experience working with government customers." Enabled by tax reform legislation, Lockheed Martin Ventures is focusing the additional $100 million on early-stage companies in the areas of sensor technologies, autonomy, artificial intelligence and cyber. With the fund's latest investment, Lockheed Martin expanded its relationship with nTopology, creator of ELEMENT, an emerging software technology in the high-growth additive and advanced manufacturing sectors. "Our investment in nTopology will bring strategic advantages in Lockheed Martin's computational design processes and help shorten the periods between the design and manufacturing phase," said Moran. The increase in the venture fund is part of $460 million that Lockheed Martin is investing as a direct result of tax reform savings. The tax reform legislation enables Lockheed Martin to make investments that improve its global competitiveness, including investing in transformative technologies that will bring lasting benefits to customers, employees and communities. The company is making additional investments enabled by tax reform savings, including: $200 million additional investments in capital expenditures and research and development in 2018 $100 million in employee training and educational opportunities over the next five years $50 million investment in science, technology, engineering and math (STEM) education enrichment, including the establishment of a new Lockheed Martin STEM Scholarship Fund $10 million for the launch of the Lockheed Martin Innovation Prize competition More details of Lockheed Martin's investments enabled by tax reform legislation can be found here. About Lockheed Martin Headquartered in Bethesda, Maryland, Lockheed Martin is a global security and aerospace company that employs approximately 100,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. SOURCE Lockheed Martin https://news.lockheedmartin.com/2018-06-07-Lockheed-Martin-Announces-100-Million-Venture-Fund-Increase

  • Contract Awards by US Department of Defense - July 2, 2019

    3 juillet 2019 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité, Autre défense

    Contract Awards by US Department of Defense - July 2, 2019

    NAVY Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded $348,223,161 for modification P00019 to a previously awarded cost-plus-fixed-fee contract (N00019-17-C-0001). This modification is for production non-recurring, special tooling and special test equipment in support of low-rate initial production Lot 12 F-35 Lightning II aircraft for the Air Force, Navy, Marine Corps, non-U.S. Department of Defense (DoD) partners and foreign military sales (FMS) customers. Work will be performed in Fort Worth, Texas (23.80%); El Segundo, California (23.86%); San Diego, California (17.03%); Samlesbury, United Kingdom (7.65%); Orlando, Florida (6.63%); Cedar Rapids, Iowa (3.44%); Nashua, New Hampshire (2.71%); Clearfield, Utah (2.15%); Marietta, Georgia (1.77%); East Aurora, New York (1.59%); Palmdale, California (1.40%); Cheltenham, United Kingdom (0.96%); Turin, Italy (0.81%); Clearwater, Florida (0.79%); Melbourne, Florida (0.60%); Irvine, California (0.58%); Kongsberg, Norway (0.53%); Arlington, Texas (0.48%); Rolling Meadows, Illinois (0.46%); Tempe, Arizona (0.38%); Inglewood, California (0.33%); Papendrecht, Netherlands (0.28); Garden Grove, California (0.21%); Montmorency, Australia (0.20%); Marion, Virginia (0.17%); Independence, Ohio (0.14%); Amesbury, Massachusetts (0.13%); Rome, New York (0.13%); Los Angeles, California (0.10%); Hot Springs, Arkansas (0.10%); Lystrup, Denmark (0.09%); Grand Rapids, Michigan (0.09%); Owego, New York (0.07%); Sharon, Massachusetts (0.06%); Wichita, Kansas (0.06%); Boulder, Colorado (0.05%); Carlsbad, California (0.04%); Ontario, California (0.04%); Delta, British Columbia, Canada (0.03%); Long Beach, California (0.01%); Lindenhurst, New York (0.01%); Eskisehr, Turkey (0.01%); Saint Peters, Missouri (0.01%); Santa Fe Springs, California (0.01%); and Rancho Cucamonga, California (0.01%). Work is expected to be completed in August 2022. Fiscal 2017 aircraft procurement (Navy and Marine Corps); fiscal 2018 and 2019 aircraft procurement (Air Force, Navy and Marine Corps); non-U.S. DoD partner and FMS funds in the amount of $348,223,161 are being obligated at time of award, $17,899,115 of which will expire at the end of the current fiscal year. This modification combines purchases for the Air Force ($129,642,270; 38%); Navy ($69,738,685; 20%); Marine Corps ($61,001,500; 17%); non-U.S. DoD partners ($60,840,706; 17%) and FMS customers ($27,000,000; 8%). The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity. Anchor Innovation Inc.,* Virginia Beach, Virginia (N50054-19-D-1901); Beach Marine Services Inc.,* Portsmouth, Virginia (N50054-19-D-1902); Colonna's Shipyard Inc.,* Norfolk Virginia (N50054-19-D-1903); East Coast Repair & Fabrication LLC,* Norfolk, Virginia (N50054-19-D-1904); Fairlead Boatworks Inc.,* Newport News, Virginia (N50054-19-D-1905); Lyon Shipyard Inc.,* Norfolk, Virginia (N50054-19-D-1906); Q.E.D. Systems, Inc.,* Virginia Beach, Virginia (N50054-19-D-1907); United States Marine Inc.,* Gulfport, Mississippi (N50054-19-D-1908); and Willard Marine Inc.,* Virginia Beach, Virginia (N50054-19-D-1909) for Mid-Atlantic Regional Maintenance Center Marine Boatyard and Industrial Support for Lot I, and Colonna's Shipyard Inc.,* Norfolk, Virginia (N50054-19-D-1910); East Coast Repair and Fabrication LLC,* Norfolk, Virginia (N50054-19-D-1911); Fairlead Boatworks Inc.,* Newport News, Virginia (N50054-19-D-1912); and Lyon Shipyard Inc.,* Norfolk, Virginia (N50054-19-D-1913) for Mid-Atlantic Regional Maintenance Center Marine Boatyard and Industrial Support for Lot II, are each awarded firm-fixed-price, indefinite-delivery/indefinite-quantity, multiple award contracts to furnish the management, material support services, labor, supplies and equipment deemed necessary to provide marine boatyard and industrial support which includes modifications, upgrades, service life extension and repairs to non-commissioned boats, crafts, lighterage and service craft and/or their associated systems and periodic maintenance. These contracts include options which, if exercised, would bring the cumulative ceiling value to $216,979,810. These nine small businesses will have the opportunity to provide offers for individual delivery orders. Work will be performed in the Hampton Roads, Virginia, area and is expected to be complete by July 2020, and work is expected to be completed by July 2024, if all options are exercised. Fiscal 2019 operations and maintenance (Navy) funding in the amount of $32,500 ($2,500 minimum guarantee per contract) was obligated under each contract's initial delivery order and expires at the end of the current fiscal year. These contracts were competitively procured via the Federal Business Opportunities website with nine offers received. The Navy's Mid-Atlantic Regional Maintenance Center, Norfolk, Virginia, is the contracting activity. Leidos Inc., Reston, Virginia, is awarded a maximum $99,000,000 cost-plus-fixed-fee, indefinite-delivery/indefinite-quantity, single award task order contract for aerospace medical and environmental health research support services at the Naval Medical Research Unit-Dayton. Work will be performed in Dayton, Ohio, and is expected to be completed by July 7, 2024. Fiscal 2019 research, development, testing and evaluation (Navy) funding in the amount of $1,000,000 will be obligated upon award under an initial incrementally funded task order and the funds will not expire at the end of the current fiscal year. This contract was competitively procured via the Federal Business Opportunities website, with six offers received. The Naval Medical Logistics Command, Fort Detrick, Maryland, is the contracting activity (N62645-19-D-5005). RWG (Repair & Overhauls) USA Inc., Houston, Texas (N64498-19-D-4019); and the Canadian Commercial Corp. representing Standard Aero Energy Co. (SAE) Winnipeg, Manitoba (N64498-19-D-4020) are each awarded an indefinite-delivery/indefinite-quantity, firm-fixed-price contract for depot level overhaul of Navy 501-K34 marine gas turbine engines for a program cumulative value of $70,000,000. The 501-K34 marine gas turbine engines are used on the Navy ship class DDG-51. Orders will be competed between both offerors. Work under N64498-19-D-4019 will be performed in Houston, Texas, and work under N64498-19-D-4020 will be performed in Winnipeg, Manitoba, and is expected to be completed by March 2024. No funding will be obligated at time of award. Funds will be obligated as individual orders are issued. These contracts were not competitively procured, in accordance with 10 U.S. Code 2304(c)(1), Limited Number of Responsible Sources. The Naval Surface Warfare Center, Philadelphia Division, Philadelphia, Pennsylvania, is the contracting activity. Sikorsky Aircraft Corp., a Lockheed Martin Co., Stratford, Connecticut, is awarded a $21,689,142 cost-plus-fixed-fee delivery order (N00019-19-F-2972) against a previously issued basic ordering agreement (N00019-19-G-0029). This order procures the CH-53K Data Transfer Unit and Defensive Electronic Countermeasure System Replacement program and includes necessary Non Recurring Engineering (NRE) to replace existing subsystems within the CH-53K production aircraft. NRE tasks include investigation, systems engineering support, risk analysis, integration development, weight impact and publication updates. Work will be performed in Stratford, Connecticut (44.02%); Cedar Rapids, Iowa (41.74%); Fort Worth, Texas (7.41%); Vergennes, Vermont (2.81%); City of Industry, California (1.9%); Costa Mesa, California (1.18%); and various locations within the continental U.S. (.94%), and is expected to be completed in January 2021. Fiscal 2017 aircraft procurement (Navy) funds in the amount of $21,689,142 will be obligated at time of award, all of which will expire at the end of the current fiscal year. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity. Epsilon Systems Solutions Inc.,* Portsmouth, Virginia, is awarded a $14,589,487 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for the repair, restoration, overhaul, assembly and test services of the Naval Submarine Universal Modular Mast (UMM). The UMM systems will be completely overhauled off-hull at the vendor's facility to a ready-for-issue status to support the fleet during maintenance availabilities. Required services will be determined on an individual task order level. Work will be performed in Portsmouth, Virginia, and is expected to be completed by July 2024. Fiscal 2019 operation and maintenance (Navy) funding in the amount of $566,676 will be obligated at time of award via the first task order and will expire at the end of the current fiscal year. This contract was competitively procured via the Federal Business Opportunities website, with two offers received. The Naval Surface Warfare Center, Philadelphia Division, Philadelphia, Pennsylvania, is the contracting activity (N64498-19-D-4027). Frequentis Defense Inc., Columbia, Maryland, is awarded an $8,454,481 firm-fixed-price contract for non-recurring engineering and logistics for the design, development, test, manufacture and repair of the MD-5A Unmanned Carrier Aviation Mission Control System, which will support the MQ-25 Stingray unmanned air vehicle. The integrated computer system will transport voice communications from carrier-based air vehicle operators to local audio switches, local radio terminals and remote radio terminals. Work will be performed in Columbia, Maryland, and is expected to be completed in March 2021. Fiscal 2019 research, development, test and evaluation (Navy) funds in the amount of $8,454,481 will be obligated at time of award, none of which will expire at the end of the current fiscal year. This contract was not competitively procured pursuant to Federal Acquisition Regulation 6.302-1. The Naval Air Warfare Center Aircraft Division, Lakehurst, New Jersey, is the contracting activity (N68335-19-C-0276). Tompco Inc.,* Seabeck, Washington, is awarded $8,221,449 for firm-fixed-price task order N44255-19-F-4283 under a previously awarded multiple award construction contract (N44255-17-D-4014) for the RM #19-0166 asbestos abatement and replacement of steam condensate and high pressure drain systems, Naval Base Kitsap, Puget Sound, Naval Shipyard and Intermediate Maintenance Facility, Bremerton, Washington. Scope of work includes the abatement of asbestos and replacement of systems throughout the steam distribution system to improve worker safety. This project consists of High Efficiency Particulate Air (HEPA) vacuuming all surfaces, wet wiping, scraping, shoveling, scrubbing and/or mopping where HEPA vacuuming is inadequate to containment and removal of any mud, sand, soil and dust/debris from surfaces including floors, abandoned piping removal and replacement of piping and insulation. The project area is DD5 service gallery and all connected laterals, trenches, utilidors, etc. The work will be performed in Bremerton, Washington, and is expected to be completed by Feb. 3, 2020. Fiscal 2019 working capital contract funds in the amount of $8,221,449 are obligated on this award and will not expire at the end of the current fiscal year. Five solicitation emails were sent and four proposals were received for this task order. The Naval Facilities Engineering Command (NAVFAC), Northwest, Silverdale, Washington, is the contracting activity for the basic contract and the NAVFAC Bremerton Field Engineering, Acquisition Department is the contracting activity for the task order. Sikorsky Aircraft Corp., a Lockheed Martin Co., Stratford, Connecticut, is awarded $7,103,403 for cost-plus-fixed-fee order N00019-19-F-2555 against a previously issued basic ordering agreement N00019-19-G-0029. This order procures non-recurring engineering, development, tooling, manufacturing, qualification, reporting and delivery of the nose, main, intermediate and tail gearbox gears in support of the low rate initial production of the CH-53K aircraft. Work will be performed in Stratford, Connecticut, and is expected to be completed in October 2020. Fiscal 2018 aircraft procurement (Navy) funds in the amount of $7,103,403 will be obligated at time of award, none of which will expire at the end of the current fiscal year. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity. ARMY Yulista Support Services,* Huntsville, Alabama, was awarded a $226,911,155 cost-plus-fixed-fee contract for maintenance and modifications of C5ISR flight activity platforms. Bids were solicited via the internet with zero received. Work locations and funding will be determined with each order, with an estimated completion date of June 19, 2024. U.S. Army Contracting Command, Aberdeen Proving Ground, Maryland, is the contracting activity (W56KGU-19-D-0002). Cornforth Consultants Inc.,* Portland, Oregon (W91237-19-D-0016); K S Ware & Associates LLC,* Nashville, Tennessee (W91237-19-D-0017); and Aterra-Schnabel JV,* Ambler, Pennsylvania (W91237-19-D-0015), will compete for each order of the $15,000,000 firm-fixed-price contract for national dam safety engineering and design services. Bids were solicited via the internet with 10 received. Work locations and funding will be determined with each order, with an estimated completion date of July 1, 2024. U.S. Army Corps of Engineers, Huntington, West Virginia, is the contracting activity. AIR FORCE Leidos Inc., Reston, Virginia, has been awarded a $66,752,500 cost-plus-fixed-fee contract for rapid technology development and demonstrations. This contract provides for the development of new/novel concepts for sensor and systems of sensor systems across the multiple domains and spectrums that aid in command, control, communications, computers, intelligence, surveillance and reconnaissance and battlespace awareness. Work will performed in Reston, Virginia, with base support at Wright-Patterson Air Force Base, Ohio, and is expected to be completed by June 12, 2024. This award is a result of a competitive acquisition and two offers were received. Fiscal 2019 research, development, test and evaluation funds in the amount of $546,050 are being obligated at the time of award. Contracting activity is the U.S. Air Force, Air Force Materiel Command, Air Force Research Laboratory, Wright-Patterson AFB, Ohio (FA8650-19-C-1941). Engility Corp., Andover, Massachusetts, has been awarded a $40,000,000 firm-fixed-price/cost reimbursement/cost-plus-fixed-fee, indefinite-delivery/indefinite-quantity contract for services supporting the Space and Missile Systems Center, Advanced Systems and Development Directorate, Ground Systems and Space Operations Division at Kirtland Air Force Base, New Mexico. This contract provides engineering, development, integration and sustainment services supporting the current ground system enterprise throughout its evolution, including the transition to and buildout of enterprise ground services. Work will be performed at Kirtland AFB, New Mexico; Schriever AFB, Colorado; Buckley AFB, Colorado; Colorado Springs, Colorado; Space Based Infrared Radar Payload On-Orbit Test Station facility, Azusa, California; the Space Management Battle Lab, Colorado Springs, Colorado; Vandenberg AFB, California, as well as future sites at Naval Research Laboratory, Blossom Point, Maryland, and is expected to be completed by Sept. 20, 2019. This award is the result of a sole source acquisition. Space and Missile Systems Center, Advanced Systems & Development Directorate, Kirtland AFB, New Mexico, is the contracting activity (FA8818-19-D-0004). General Dynamics Information Technology Inc., doing business as General Dynamics Mission Systems, Fairfax, Virginia, have been awarded a $35,683,952, cost-plus-incentive-fee modification (P00015) to previously awarded FA8307-17-F-0004 for next generation GEO overhead persistent infrared (NGG-OPIR). The contract modification provides for additional Medium/LargeSat Common Solutions (MLCS) variants for the NGG-OPIR program, additional MLCS engineering development modules, increased tempest testing and to fund an overrun. Work will be performed at General Dynamics Mission System, Scottsdale, Arizona, and is expected to be completed by March 31, 2022. Fiscal 2019 research and development funds in the amount of $12,726,494.04 are being obligated at the time of award. The Air Force Life Cycle Management Center, Cryptologic Systems Division, Contracting Division, Joint Base San Antonio, Texas, is the contracting activity. DEFENSE LOGISTICS AGENCY Valley Apparel, LLC,* Knoxville, Tennessee, has been awarded a maximum $10,794,000 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for Navy working uniform parkas. This was a competitive acquisition with two responses received. This is a one-year base contract with two one-year option periods. Location of performance is Tennessee, with a July 1, 2020 performance completion date. Using military service is Navy. Type of appropriation is fiscal 2019 through 2020 defense working capital funds. The contracting activity is the Defense Logistics Agency, Troop Support, Philadelphia, Pennsylvania (SPE1C1-19-D-1172). *Small business https://dod.defense.gov/News/Contracts/Contract-View/Article/1895053/source/GovDelivery/

  • US Navy embraces robot ships, but some unresolved issues are holding them back

    2 juin 2020 | International, Naval

    US Navy embraces robot ships, but some unresolved issues are holding them back

    By: David B. Larter WASHINGTON — The U.S. military is banking on unmanned surface and subsurface vessels to boost its capacity in the face of a tsunami of Chinese naval spending. But before it can field the systems, it must answer some basic questions. How will these systems deploy? How will they be supported overseas? Who will support them? Can the systems be made sufficiently reliable to operate alone and unafraid on the open ocean for weeks at a time? Will the systems be able to communicate in denied environments? As the Navy goes all-in on its unmanned future, with billions of dollars of investments planed, how the service answers those questions will be crucial to the success or failure of its unmanned pivot. Many of those issues fall to the Navy's program manager for unmanned maritime systems, Capt. Pete Small. As the Navy puzzles out some very basic questions, it must also ponder some big organizational changes to maximize the potential of the platforms once they arrive. “Our infrastructure now is highly optimized around large, very capable, highly manned warships,” Small said at the C4ISRNET Conference in May. “We spend a lot of time and effort preparing them for deployment, and we deploy them overseas for months at a time. They are almost perfectly reliable: We generally send them on a mission, they do it and come back almost without fail. “For these distributed and smaller platforms, we're going to have to shift that infrastructure — how we prepare, deploy, transit over and sustain these smaller platforms in theater.” That question is critical because it will affect the requirements for how the systems are designed at the outset. In the case of the medium and large unmanned surface vessels under development, just how big and how rugged they need to be would depend on how the Navy plans to use them. “All the scenarios we're discussing are far forward,” Small said. “Far from the shores of the continental United States. So there is absolutely a transit somewhere — a long transit — to get these platforms where they need to be. We've got to come through that in a range of ways. “For the medium and large [unmanned surface vessel] USV, in setting up the specifications and establishing what the requirements should be for unmanned surface vessels, crossing an ocean is a critical part of those missions.” Making these platforms cost-effective is almost the entire point of their development, but questions such as “Should we design the vessel to be able to make an Atlantic or Pacific crossing?” can mean a big price difference. “With a medium USV, we're kind of on the edge of whether it's big enough to cross the ocean by itself, and we're learning, you know, how big does it need [to be],” Small said. “You may be able to make it smaller and cheaper to get it to do the job you want it to do ultimately, but if it has to cross the ocean to get there, that might be the overall driving requirement, not the end mission requirement. If you are going to heavy-lift them and bring them over in bulk, well that's a new concept and we have to figure out how we're going to do that," he added. “What ships are we going to use to do that? Where do we operate from overseas? There's a range of options in each case, but in general we're going to have to transition from a system more optimized around our manned fleet infrastructure to a more distributed mix of large, highly manned platforms to smaller unmanned platforms.” Relocatable support The introduction of entirely new platforms that operate without humans onboard mean that the Navy must think about how to support them downrange, Small said. “We're going to need to talk about things like tenders, heavy lift ships and forward-operating bases, things like that,” he said. The idea of an unmanned vessel tender for the medium USV, which the Navy intends to use as a far-forward distributed sensor, is likely the best solution, said Bryan Clark, a senior fellow at the Hudson Institute and a retired submarine officer. “I think it's likely that they'll be heavy-lifted into the theater, not because they can't make it themselves but because in general it would be less wear and tear on the vessels,” he said. “You want that support to be relocatable as opposed to a group of guys working out of a building ashore. The whole purpose of them is to be flexible; and because they're small, that would, in theory, give you lots of options as to remote locations you could operate from.” The tender could be adapted from an existing platform in the sealift fleet for now, and ultimately procured as new later, Clark said, adding that the ship would need cranes and a platform near the waterline to support the medium USV and perhaps the planned extra-large unmanned undersea vehicle as well. Additionally, the vessels should be stationed where the Navy has long-standing relationships, like Singapore, Souda Bay, Greece, Britain and the like, as well as where they are likely to operate. The Marine Corps' transition from a heavy force concentrated on large amphibious ships to a lighter force distributed around smaller ships and lighter amphibs may free up some platforms for porting unmanned vessels around the globe. “As we change the deployment schemes for amphibious ships, that may afford the opportunity to have amphibs with well decks that are not full of Marines' equipment but with unmanned vessels,” he said. Reliability For Small, the questions that are most immediate are how to make the systems dependable. “We plan to send these systems out to sailors who are at the forefront of the fight, and we need these systems to work every time and be reliable,” he said. “So, reliability is a fundamental issue associated with autonomous vehicles.” Questions have been raised about things as basic as whether the Navy can get a marine diesel engine to run for days and potentially weeks without being touched by humans. But Small said that's not what he spends a lot of time worrying about. “For me, I think there is plenty of technology there and it will get better. I'm less concerned with, ‘Will the engine run long enough?' and more concerned with the reliability of the system as a whole,” he said. “The autonomy running that vessel is a key aspect of the overall reliability of the system. So there's a code and software aspect to this, but there is also the interface between that code and the hull, mechanical and electrical systems that we have on ships.” Perhaps unsurprisingly, it is the human ability to detect subtle changes in the equipment they operate that is the toughest to replicate, Small said. “It's about self-awareness and the ability to self-diagnose problems and changing conditions associated with that equipment and react to those changing conditions,” he explained. “That's either by alerting an operator or having an autonomous response that allows the mission to continue. “A sailor would sense a vibration; a sailor would hear abnormal noise; a sailor would see something getting warmer, do the diagnostics and take actions. ... There's as strong a relationship between that and the overall reliability of those physical systems themselves.” https://www.defensenews.com/naval/2020/06/01/us-navy-embraces-robot-ships-but-some-unresolved-issues-are-holding-them-back/

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