U.S. Coast Guard Lt. Ryan Butler, Sector Juneau chief of inspections, observes crewmembers of the cruise ship Crystal Serenity as they test the capabilities of a crane and the hydrostatic release life raft in Juneau, Alaska, June 22, 2016. The crew of the Crystal Serenity has been conducting multiple exams in preparation for their voyage of the Northwest Passage Aug. 16, 2016. (U.S. Coast Guard photo by Petty Officer 2nd Class Jon-Paul Rios.)