Petty Officer 2nd Class Davis Alexander, a boatswain’s mate aboard the Coast Guard Cutter Elderberry, holds onto a buoy as the cutter’s small boat traverses the Gastineau Channel near Juneau, Alaska, April 1, 2015. Alexander kept a lookout for shallow water as the boat’s pilot navigated the narrow channel. (U.S. Coast Guard photo by Petty Officer 2nd Class Grant DeVuyst)