Night crew tank mechanics troubleshoot a tank engine with help from an electronic manual at Camp Habbaniyah, Iraq, June 29. Marines of Company A, 2nd Tank Battalion support the grunts of 3rd Battalion, 5th Marine Regiment by maintaining their M1A1 Abrams Main Battle Tanks along the main highways near Habbaniyah, Iraq. U.S. Marine Corps photo by Cpl. Mark Sixbey