Air Force 2nd Lt. Alexandra Rea, left, and 1st Lt. Elizabeth Guidara participate in training at Malmstrom Air Force Base, Mont., March, 21, 2016. Rea, a combat crew deputy director assigned to the 490th Missile Squadron, and Guidara, a combat crew deputy director assigned to the 12th Missile Squadron, maintain a 24-hour alert shift to sustain an active alert status of the nation’s intercontinental ballistic missile force. Air Force photo by Airman Collin Schmidt