Petty Officer 1st Class Kim Nguyen (on stretcher) is carried up a ladder aboard the Coast Guard Cutter Healy as part of a joint U.S. Coast Guard – U.S. Navy emergency extraction drill in which the dive teams practice for and evaluate different cold water dive scenarios, July 22, 2017. The Coast Guard’s dive team depends on the Navy for use of their dive recompression chamber, a tool that helps to treat diving-related trauma. U.S. Coast Guard photo by Senior Chief Petty Officer Rachel Polish