PACIFIC OCEAN (June 26, 2021) Sailors fire M4 rifles during a marksmanship qualification course aboard Arleigh Burke-class guided-missile destroyer USS O�Kane (DDG 77), June 26, 2021. O�Kane is currently underway conducting routine maritime operations in U.S. 3rd Fleet. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jasen Moreno-Garcia)