NORFOLK (Sept. 7, 2022) Expeditionary Resuscitative Surgical System (ERSS) surgeons and hospital corpsman assigned to Naval Medical Center Portsmouth perform emergency surgery and advanced trauma care on mannequins during a realistic test-of-concept aboard the Whidbey Island-class dock landing ship, USS Tortuga (LSD-46), Sept. 7, 2022. ERSS is designed to provide advanced medical capabilities at the closest point-of-injury, either afloat, undersea or ashore during combat or contingency operations in a distributed maritime environment. (U.S. Navy photo by Mass Communication Specialist 1st Class Ryan Seelbach)