1st Lt. Kelly Hogan (center), 371st Minimal Care Detachment, Twinsburg, Ohio, evaluates an acting casualty under the watchful eye of an Observer-Controller-Trainer during a train derailment training exercise at Muscatatuck Urban Training Center April 28. The training was part of Guardian Response 22, a Multi-component Homeland Emergency Response Exercise run by the Army Reserve’s 78th Training Division. Like many Army Reserve soldiers, Hogan, an emergency trauma nurse in her civilian life, benefits from the combined military and civilian experience when wearing both hats; a unique benefit that reserve forces bring to the Army. (US Army photo by SFC Monte Swift, 204th PAD)