U.S. Marines fire the main gun of their M1A1 Abrams tank.
U.S. Marines fire the main gun of their M1A1 Abrams tank in the western desert of the Najaf Province of Iraq during a training exercise on Jan. 24, 2005. The Marines, assigned to Tank Platoon, Battalion Landing Team 1st Battalion, 4th Marines, 11th Marine Expeditionary Unit Special Operations Capable train monthly to maintain proficiency.