U.S. President Barack Obama speaks to an audience of 3,000 service members, military families, civic leaders and elected officials Dec. 15 inside a U.S. Marine hangar on Joint Base McGuire-Dix-Lakehurst, N.J. The purpose of the president’s visit to JB MDL was to thank troops for their service. Also speaking at the event were Maj. Gen. Margaret W. Boor, commanding general of the Army Reserve’s 99th Regional Support Command, and Maj. Gen. Rick Martin, commanding general of the U.S. Air Force Expeditionary Center.