170906-N-AD724-0003 ATLANTIC OCEAN (Sept. 5, 2017) Naval Air Crewman (Helicopter) 2nd Class Brad Barbour, assigned to the "Night Dippers" of helicopter Sea Combat Squadron (HSC) 5, scans the Atlantic Ocean for threats while standing plane guard. HSC-5 is assigned to the Nimitz-class aircraft carrier USS Abraham Lincoln (CVN 72) while underway conducting training after successful completion of its carrier incremental availability. (U.S. Navy photo by Mass Communication Specialist Seaman Shane Bryan/Released)