U.S. Army Capt. Craig Roberts and Sgt. Chris Laird demonstrate to Lt. Gen. David M. Hodne, deputy commanding general, Futures and Concepts, the Health Readiness and Performance System, which monitors a Soldier's health using tracking applications. Role I is to conduct initial trauma care to incoming patients while the purpose of Role II is to provide advanced trauma management and surgery. PC-C4 is a culmination of numerous