The barrel of an M1A1 Abrams main battle tank from Bravo Company, 2nd Tank Battalion, aims down toward its target during an offensive and defensive maneuver exercise at Marine Corps Base Camp Lejeune, N.C., Aug. 26, 2015. Platoons from the company practiced searching and clearing operational areas to reinforce their basic skills. The tank has a 120mm M256 smoothbore gun on the front capable of firing several types of explosive rounds. - The barrel of an M1A1 Abrams main battle tank from Bravo Company, 2nd Tank Battalion, aims down toward its target during an offensive and defensive maneuver exercise at Marine Corps Base Camp Lejeune, N.C., Aug. 26, 2015. Platoons from the company practiced searching and clearing operational areas to reinforce their basic skills. The tank has a 120mm M256 smoothbore gun on the front capable of firing several types of explosive rounds.