Center for Defense Concepts and Technology

Mazie Hirono (D-HI) and Rear Adm. John Fuller, commander of Navy Region Hawaii and Naval Surface Group Middle Pacific, tour Red Hill Bulk Fuel Storage Facility in Honolulu, Hawaii. (U.S. Navy)

Aviation machinists perform maintenance on a MQ-8B unmanned helicopter on the flight deck of the Independence-variant littoral combat ship USS Gabrielle Giffords (LCS 10), May 14, 2020. (U.S. Navy)

U.S. Air Force Maj. Nicholas Tensing monitors a computer in support of the Advanced Battle Management System Onramp 2 on Sept. 2, 2020 at Joint Base Andrews, Maryland. (Senior Airman Daniel Hernandez/U.S. Air Force)

A Hawaii Air National Guard F-22 Raptor approaches a Wisconsin Air National Guard KC-135 Stratotanker to receive aerial refueling over the Pacific Ocean. (John Linzmeier/US Air National Guard)

A plane director signals to the pilot of an F/A-18C Hornet from the "Wildcats" of Strike Fighter Squadron (VFA) 131 after landing on the flight deck of the Nimitz-class aircraft carrier USS Dwight D. Eisenhower (U.S. Navy)

Bravo Battery, 62nd Air Defense Artillery Regiment, 69th Air Defense Artillery Brigade emplaced onto the new training area for a month long exercise (U.S. Army photo by Sgt. Brandon Banzhaf)

A submarine undergoes maintenance at the government-owned Norfolk Naval Shipyard. (Navy)

Sailors signal that an F/A-18E Super Hornet fighter jet is ready for takeoff on the flight deck of aircraft carrier USS Ronald Reagan. (U.S. Navy)