Lance Cpl. Jeremy Booth loads a 2.75-inch rocket onto an AH-1W Super Cobra helicopter. U.S. Marine Corps Lance Cpl. Jeremy Booth loads a 2.75-inch rocket onto a U.S. Marine Corps AH-1W Super Cobra helicopter for a live-fire exercise aboard the amphibious assault ship USS Essex (LHD 2) in the Philippine Sea during Keen Sword 2011 on Dec. 9, 2010. Keen Sword is a U.S.-Japan bilateral naval exercise designed to strengthen joint military operations. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 774525-E-JZG40-627.jpg Photo Gallery