Crew chiefs from the 393rd Aircraft Maintenance Unit prepare to tow a B-2 Spirit while deployed to an undisclosed location in the U.S. Pacific Command area of operations March 11, 2016. Bomber training missions and deployments ensure crews maintain a high state of readiness and proficiency and demonstrate the ability to provide an always-ready global strike capability. (U.S. Air Force photo by Senior Airman Joel Pfiester)

A B-2 Spirit deployed from Whiteman Air Force Base, Mo., takes off from an undisclosed location in the U.S. Pacific Command area of operations March 27, 2016. Bomber training missions and deployments ensure crews maintain a high state of readiness and proficiency and demonstrate the ability to provide an always-ready global strike capability. (U.S. Air Force photo by Senior Airman Joel Pfiester)

Maintainers from Whiteman Air Force Base, Mo., perform a gear swing while deployed to an undisclosed location in the U.S. Pacific Command are of operations March 13, 2016. U.S. Strategic Command bombers regularly rotate through the Indo-Asia-Pacific to conduct U.S. Pacific Command-led operations, providing leaders with deterrent options to maintain regional stability. (U.S. Air Force photo by Senior Airman Joel Pfiester)

A B-2 Spirit deployed from Whiteman Air Force Base, Mo., takes off from an undisclosed location in the U.S. Pacific Command area of operations March 27, 2016. Bomber training missions and deployments ensure crews maintain a high state of readiness and proficiency and demonstrate the ability to provide an always-ready global strike capability. (U.S. Air Force photo by Senior Airman Joel Pfiester)

4/8/2016 - U.S. Air Force Senior Airman Hirantha De Mel, a crew chief with the 509th Aircraft Maintenance Squadron, watches a U.S. Air Force B-2 Spirit bomber perform an engine run, March 11, 2016, in the U.S. Pacific Command area of operations. Strategic Command bombers regularly deploy to the Indo-Asia-Pacific region to conduct PACOM-led operations which provide leaders deterrence options to maintain regional stability. (U.S. Air Force photo by Senior Airman Joel Pfiester/Released)

U.S. Air Force Staff Sgt. James Torrance, an electrical and environmental systems technician with the 131st Aircraft Maintenance Squadron, performs maintenance on a B-2 Spirit while deployed to an undisclosed location in the U.S. Pacific Command area of operations March 11, 2016. These deployments help maintain global stability and security, while enabling aircrew to become familiar with operating in different regions. (U.S. Air Force photo by Senior Airman Joel Pfiester)

4/8/2016 - U.S. Air Force Senior Airman Brandon Wirth, a crew chief with the 393rd Aircraft Maintenance Unit, prepares to tow a U.S. Air Force B-2 Spirit bomber, March 11, 2016, in the U.S. Pacific Command area of operations. The Department of Defense regularly conducts bomber training missions with and in support of the geographic combatant commands to provide an always-ready global strike capability. (U.S. Air Force photo by Senior Airman Joel Pfiester/Released)