Hydroid, Inc ., Pocasset, Massachusetts, is being awarded a $52,300,236 contract modification to increase the ceiling for production support for the MK 18 family of unmanned underwater vehicle systems. The MK 18 program supports unmanned underwater vehicle systems. This award brings the cumulative value of this contract, if all options are exercised, to $100,170,578. Work will be performed in Pocasset, Massachusetts. The Naval Surface Warfare Center, Indian Head Explosive Ordnance Disposal Technology Division, Indian Head, Maryland, is the contracting activity.

The Aerospace Corp ., El Segundo, California, has been awarded a $1,084,529,525 contract modification for systems engineering and integration support for the National Space Community. This contract modification provides for the exercise of option year one for fiscal 2020 services being procured under the multiple year contract. Work will be performed at El Segundo, California. The Space and Missile Systems Center, El Segundo, California, is the contracting activity.

Harper Construction Company, Inc ., San Diego, California, is being awarded a $95,355,749 contract for the construction of the P-284 F-35C maintenance hangar at Naval Air Station, Lemoore, California. The project includes construction of a two-module Type I aircraft maintenance hangar, associated airfield pavements, operational and munitions storage, renovation of an existing battery shop, and building a new tool room. Project provides temporary facilities. Work will be performed in Lemoore, California. The Naval Facilities Engineering Command, Southwest, is the contracting activity.

Environmental Chemical Corp ., Burlingame, California, is being awarded a $90,696,992 task order contract for master time clocks and operations facility, Naval Observatory, District of Columbia. The task order also contains 10 unexercised options and nine planned modifications, which if utilized, would increase the cumulative task order value to $95,546,157. The work to be performed provides for the construction of a new building to house the master clocks, demolition and renovation of existing buildings, rehabilitation of existing foundations, and associated Verizon and Potomac Electric Power Co. work. The options that remain are for electronic security measures, and are available for award up to 365 days after task order award. The planned modifications that remain are for furniture, fixtures, and equipment and audio visual equipment. Work will be performed in Washington DC. The Naval Facilities Engineering Command, Atlantic, Norfolk, Virginia, is the contracting activity.

Semper Tek, Inc ., Lexington, Kentucky; Construction Services Group, Inc ., Charleston, South Carolina; KMK Construction, Inc., Jacksonville, Florida; Charlton Enterprise, Inc ., Folkston, Georgia; and York-Brawley JV, LLC , Yorktown, Virginia, have been awarded a maximum value of $95,000,000, multiple-award civil engineer multiple award construction contract. This contract supports operational design and construction contract efforts to provide 78th Civil Engineering Group the capability to have design and construction maintained in a short time frame. Work will be performed at Robins Air Force Base, Georgia. The Air Force Material Command Operational Contracting, Robins Air Force Base, Georgia is the contracting activity.

Alaska Structures, Inc ., Scottsdale, Arizona, has been awarded a maximum $200,000,000 contract for commercial shelters. This is a one-year base contract with three one-year option periods. Locations of performance are Arizona and New Mexico. Using military services are Army, Air Force, Navy, and Marine Corps. The contracting activity is the Defense Logistics Agency Troop Support, Philadelphia, Pennsylvania.

BAE Systems San Diego Ship Repair , San Diego, California, was awarded an $86,117,104 contract for the execution of USS Decatur (DDG 73) fiscal 2019 extended dry-docking selected restricted availability (EDSRA). This availability will include a combination of maintenance, modernization, and repair of USS Decatur. This is a Chief of Naval Operations scheduled EDSRA. The purpose is to maintain, modernize, and repair USS Decatur. This is a long-term availability and was solicited on a coast-wide (West Coast) basis without limiting the place of performance to the vessel’s homeport. BAE will provide the facilities and human resources capable of completing, coordinating, and integrating multiple areas of ship maintenance, repair, and modernization for USS Decatur. This contract includes options which, if exercised, would bring the cumulative value of this contract to $88,816,552. Work will be performed in San Diego, California. The Naval Sea Systems Command, Washington DC, is the contracting activity.

BAE Systems San Diego Ship Repair , San Diego, California, was awarded an $84,595,351 contract for the execution of USS Stethem (DDG 63) fiscal 2019 extended dry-docking selected restricted availability (EDSRA). This is a Chief of Naval Operations scheduled EDSRA. This availability will include a combination of maintenance, modernization, and repair of the USS Stethem. This is a long-term availability and was solicited on a coast-wide (West Coast) basis without limiting the place of performance to the vessel’s homeport. BAE will provide the facilities and human resources capable of completing, coordinating, and integrating multiple areas of ship maintenance, repair, and modernization for USS Stethem. This contract includes options which, if exercised, would bring the cumulative value of this contract to $96,183,466. Work will be performed in San Diego, California. The Naval Sea Systems Command, Washington DC, is the contracting activity.