Photo essay: Airmen train in land navigation in Expeditionary Center's CAST course Published Nov. 6, 2009 By Tech. Sgt. Scott T. Sturkol Air Mobility Command Public Affairs JOINT BASE MCGUIRE-DIX-LAKEHURST, N.J. -- Students in the Combat Airman Skills Training Course 10-1A, taught by the U.S. Air Force Expeditionary Center's 421st Combat Training Squadron, participated in a day of land navigation training in the course on a range at Joint Base McGuire-Dix-Lakehurst, N.J., on Nov. 6, 2009. The course prepares Airmen for upcoming deployments.