MARINE CORPS BASE HAWAII (April 8, 2021) U.S. Marine Corps Sgt. Sean Ryan, left, a student in the Detachment Hawaii Enhanced Squad Leader Course, grapples with SSgt. Cole Lietha, middle, a combat instructor of the course, as Hospital Corpsman 3rd Class Kean Cortina, right, a corpsman of the course, times the event at the ground fighting station, one of twelve stations in the initial performance assessment portion of the course, Marine Corps Base Hawaii, April 8, 2021. The course is an experimental proof of concept, with the intent of modernizing training and providing squad leaders with new capabilities. (U.S. Marine Corps photo by Lance Cpl. Brandon Aultman)