170618-N-BL637-124 PACIFIC OCEAN (June 18, 2017) An MH-60S Sea Hawk helicopter assigned to the “Black Knights” of Helicopter Sea Combat Squadron (HSC) 4 flies the national ensign over the Nimitz-class aircraft carrier USS Carl Vinson (CVN 70) as part of an air power demonstration during a tiger cruise. A tiger cruise allows friends and family members of Sailors to embark the ship to experience U.S. Navy life at sea. (U.S. Navy photo by Mass Communication Specialist 2nd Class Sean M. Castellano/Released)