Live-Fire Training Sailors fire a .50-caliber machine gun during a live-fire exercise aboard the USS Whidbey Island in the Atlantic Ocean, May 7, 2016. The dock landing ship is participating in Composite Unit Training Exercise. Navy photo by Petty Officer 2nd Class Nathan R. McDonald SHARE: Download: Full Size (0.53 MB) Tags: sailors, navy Credit: Petty Officer 2nd Class Nathan M VIRIN: 160507-N-TI017-168C.JPG Photo Gallery