Pfc. Sean Gardner, a motor transportation mechanic with Combat Logistics Battalion 31, 31st Marine Expeditionary Unit issues baggage tags to the role players, during a non-combatant evacuation operation exercise during the 31st MEU's certification exercise, Oct. 1. - Pfc. Sean Gardner, a motor transportation mechanic with Combat Logistics Battalion 31, 31st Marine Expeditionary Unit issues baggage tags to the role players, during a non-combatant evacuation operation exercise during the 31st MEU's certification exercise, Oct. 1.