Australian army gunners clean the bore of their M777A2 lightweight 155 mm howitzer after firing in support of a U.S. Marine Corps air assault course on Bradshaw Field Training Area, Northern Territory, Australia, June 29, 2015. The Australian soldiers are assigned to the 101st Battery, 8th/12th Regiment, Royal Australian Artillery. Australian army gunners clean the bore of their M777A2 lightweight 155 mm howitzer after firing in support of a U.S. Marine Corps air assault course on Bradshaw Field Training Area, Northern Territory, Australia, June 29, 2015. The Australian soldiers are assigned to the 101st Battery, 8th/12th Regiment, Royal Australian Artillery. SHARE: Download: Full Size (2.209177 MB) Tags: Photo Essays Credit: VIRIN: 215289-V-MWO68-677.jpg Photo Gallery