Corpsmen with 1st Battalion, 7th Marine Regiment, treat a simulated casualty during a noncombatant evacuation operation training exercise here, Oct. 18, 2013. Corpsmen treated ill role-players during the day and treated numerous casualties of a car explosion during the night. NEOs are conducted to assist in evacuating noncombatants, service members and third country nationals from locations in a host foreign nation to an appropriate safe haven or the United States when they are put into danger.