US Air Force (USAF) STAFF Sergeant (SSGT) Cohen Young, a photographer with the 374th Communications Squadron, Yokota Air Base, Japan, interviews PETTY Officer Second Class (PO2) Antonio Ayala of the Naval Mobility Construction Battalion 4 (NMCB4) Port Hueneme, California, while at a security checkpoint near the Alyeska Pipeline Station in Valdez, Alaska, during a civilian and military mass causality exercise hosted by the Alaskan Command, in support of exercise NORTHERN EDGE 2002