Navy Petty Officer 2nd Class Marlon Esmade, left, provides medical treatment to Marine Corps Cpl. Justin Edelbach, center, playing the role of a simulated casualty, during a convoy ambush exercise on a training range surrounding Yuma Proving Ground, Ariz., Oct. 2, 2014. Esmade is a corpsman and Edelbach is an automotive mechanic assigned to 3rd Battalion, 3rd Marine Regiment. Navy Petty Officer 2nd Class Marlon Esmade, left, provides medical treatment to Marine Corps Cpl. Justin Edelbach, center, playing the role of a simulated casualty, during a convoy ambush exercise on a training range surrounding Yuma Proving Ground, Ariz., Oct. 2, 2014. Esmade is a corpsman and Edelbach is an automotive mechanic assigned to 3rd Battalion, 3rd Marine Regiment. SHARE: Download: Full Size (1.93 MB) Tags: Photo Essays Credit: VIRIN: 089993-F-BLF75-602.jpg Photo Gallery