Defensive Operations Soldiers in a vehicle defend their position while firing a simulated tube-launched, optically tracked missile at an M1A1 Abrams battle tank in the distance at the National Training Center at Fort Irwin, Calif., Aug. 3, 2016. The exercise tested the unit's ability to conduct defensive operations while defending their operations center. The vehicle is assigned to Killer Troop, 2nd Squadron, 11th Armored Cavalry Regiment. Army photo by Pvt. Austin Anyzeski SHARE: Download: Full Size (0.75 MB) Credit: Austin Anyzeski VIRIN: 160803-A-UJ561-002C.JPG Photo Gallery