Howitzer Hoist Marines prepare to attach an M777 howitzer to an MV-22 Osprey at Mount Bundey Training Area, Australia, Aug. 25, 2018, during Exercise Koolendong, a Marine Rotational Force Darwin exercise. Marine Corps photo by Staff Sgt. Daniel Wetzel SHARE: Download: Full Size (8.24 MB) Credit: Staff Sgt. Daniel Wetzel VIRIN: 180825-M-AR635-112C.JPG Photo Gallery