180430-N-AD724-2035 ATLANTIC OCEAN (April 30, 2018) Aviation Boatswain's Mate (Equipment) 2nd Class Santiago Garciaduque, left, directs Sailors to rig the barricade during an emergency barricade drill on the flight deck aboard the Nimitz-class aircraft carrier USS Abraham Lincoln (CVN 72). (U.S. Navy photo by Mass Communication Specialist Seaman Shane Bryan/Released)