Crew chiefs with the 393rd Aircraft Maintenance Unit prepare to tow a U.S. Air Force B-2 Spirit bomber, March 11, 2016, in the U.S. Pacific Command area of operations. 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/Released)