Base Christmas tree lights switched on amid singing, hot chocolate, cookies Published Dec. 16, 2017 71st Flying Training Wing Public Affairs VANCE AIR FORCE BASE, Okla. -- Students from Eisenhower Elementary School on base filled the crisp evening air with holiday carols during the Base Christmas tree lighting ceremony Dec. 4. With help from children in the audience, Col. Lee Gentile, the 71st Flying Training Wing vice commander, flipped the switch that powered up the tree lights for another holiday season. Angela Ruiz led the children in song and the Chapel staff served hot chocolate and cookies.