190821-N-QN361-141 BOSTON (Aug. 21, 2019) Chief petty officer selects, Sailors who have been selected for the paygrade of E-7, march by the Fletcher-class destroyer USS Cassin Young (DD793) during the Chief Petty Officer Heritage Weeks aboard the oldest commissioned warship afloat in the world, USS Constitution. During the selects’ week spent aboard Constitution, Sailors teach them a variety of time-honored maritime evolutions while living and working aboard the ship. (U.S. Navy Photo by Mass Communication Specialist 2nd Class Jerine Lee/Released)