PACIFIC OCEAN (July 29, 2012) Marine Pvt. Seth Stites fires an M-240B machine gun during a live-fire exercise aboard the amphibious transport dock ship USS Green Bay (LPD 20). Green Bay is part of the Peleliu Amphibious Ready Group and is underway conducting a composite training unit exercise in the Pacific Ocean. (US Navy photo by Mass Communication Specialist 1st Class Elizabeth Merriam/Released)

[Image courtesy of the US Navy Website.]