Capt. Katie Grimley, 10th Missile Squadron combat missile crew commander, performs an emergency air condition unit checkout in the missile procedures trainer during a training session at Malmstrom Air Force Base, Mont., Sept. 24. The checkout confirms the equipment is operational and was part of a training session in preparation for the 2014 Global Strike Challenge. (U.S. Air Force photo/Airman 1st Class Collin Schmidt)

Download Image: Full Size (8.05 MB)
Photo by:  |  VIRIN: 140924-F-GF295-043.JPG