Marines with the Instant Response Platoon keep close perimeter security while the convoy heading to Al Asad, Iraq, prepares for departure after repairing a bridge in Al Anbar Province, Iraq, March 17. The mission was a high priority because the bridge was not trafficable due to damage from rains in February, which caused problems for convoys using that route. The IRP is part of Marine Wing Support Squadron 274, Marine Wing Support Group 37 (Reinforced), 3rd Marine Aircraft Wing.