An M777A2 lightweight 155 mm howitzer with 101st Battery, 8th/12th Regiment, Royal Australian Artillery, Australian Army, fires a projectile in support of a U.S. Marine Corps air assault course June 29 at Bradshaw Field Training Area, Northern Territory, Australia. The AAC was a bilateral combined arms training event that combined light infantry, indirect fire weapons systems and air assets to capture and fight through a mock enemy objective.