PETERSON AIR FORCE BASE, Colo. – Airmen of the 21st Communication Squadron work on several computers at once during the Windows 10 roll out project at Peterson Air Force Base, Colo., March 22, 2017. The Windows 10 roll out is part of a Department of Defense-wide mandate to update all computers across all services. The 21st CS has been working extra shifts to ensure that mandate is met well ahead of schedule on April 1. (U.S. Air Force photo by Steve Kotecki)