U.S Air Force Col. Kevin Oliver, Joint Task Force - Port Opening commander, and U.S Air Force Lt. Col. Shawn Underwood, 621st Contingency Response Wing exercise evaluator, check a mission timeline, June 2, 2012, during support for Joint Operational Access Exercise 12-02 at Mackall Army Airfield, N.C.. Both are assigned to the 621st CRW at Joint Base McGuire-Dix-Lakehurst, N.J.