160517-N-DY073-562 ANNAPOLIS, Md. (May 17, 2016) A plebe crawls through the water under a human tunnel during the class of 2019 Sea Trials event at the U.S. Naval Academy. Sea Trials is a capstone event for the freshman midshipmen, modeled after the Marine Corps' Crucible and the Navy's Battle Stations recruit programs. (U.S. Navy photo by Mass Communication Specialist Seaman Brianna Jones/Released)