USMC M1A1 FEP Abrams Main Battle Tanks with Delta Company, 1st Tank Battalion, 1st Marine Division, fire from hull-down positions onto notional targets occupied by ´enemy forces´ to gain control of the battlefield in support of Exercise STEEL KNIGHT at Marine Corps Air Ground Combat Center, Twentynine Palms, California, December 15, 2013. USMC Video by Cpl. Joseph M. Peterson, 1st Marine Division Combat Camera (RELEASED) Source: https://www.dvidshub.net/video/318038/1st-tank-battalion-firing-hul

M1A2 Abrams Main Battle Tank

U.S. Army tankers from 1st Armored Brigade Combat Team, 3rd Infantry Division showing their skills during a demonstration of multiple maneuvers with their M1A2 SEP v2 Abrams tanks as part of the welcome ceremony of Operation Atlantic Resolve at Tapa Army Base, Estonia, March 31, 2015. U.S. Army video by Staff Sergeant J Byers. The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement. Source: https://www.dvidshub.net/.../m1a2-abrams-demons

How to recognize different Abrams tank variants. M1 Abrams Spotter's Guide