Sgt. 1st Class Rocky Mosley, a medic assigned to Headquarters Headquarters Detachment, 157th Infantry Brigade, 1st Army Division East observes 1st Battalion, 161st Field Artillery Regiment medics treat simulated casualties during XCTC 21-05 at the Camp Guernsey Joint Training Center, Wyoming, June 9, 2021. Observer, Coach/Trainers from 157th IN BDE provided feedback at each stage of XCTC to help training units develop and improve their capabilities. (U.S. Army photo by Sgt. James Hobbs)