U.S. Marines use an M88A2 Hercules Armored recovery vehicle to reinstall the engine into an M1A1 Abrams tank on Combat Outpost Shir Gazay in Afghanistan's Helmand province, Nov. 4, 2012. U.S. Marines use an M88A2 Hercules Armored recovery vehicle to reinstall the engine into an M1A1 Abrams tank on Combat Outpost Shir Gazay in Afghanistan's Helmand province, Nov. 4, 2012. SHARE: Download: Full Size (2.28 MB) Tags: Photo Essays Credit: VIRIN: 187631-N-MNM19-142.jpg Photo Gallery