140730-F-AN072-041
Staff Sgt. Timothy Beaupre checks the identification card of 1st Lt. Paul Wolfe July 30, 2014, before he enters the control room at a Missile Alert Facility in North Dakota. During code change, missileers work 12-hour shifts instead of the usual 24-hour shifts due to an increase in the mission tempo. Beaupre is a 91st Missile Security Forces Squadron flight security controller and Wolfe is the 740th Missile Squadron missile combat crew commander. (U.S. Air Force photo/Airman 1st Class Apryl Hall)