GUARD DUTY Senior Airman Mathew Steer, left, and Senior Airman Richard Rodriguez monitor vehicles closely at an entry control point at Kirkuk Regional Air Base, Iraq, Jan. 24, 2007. Both airmen are Kirkuk Air Base perimeter guards for the 506th Expeditionary Security Forces Squadron. SHARE IMAGE: Download Image: Full Size (0.05 MB) Photo By: VIRIN: 906669-Q-KET81-896.jpg Photo Gallery