President Barack Obama and First Lady Michelle Obama greet service men and women and their families, during Christmas dinner in the mess hall at Marine Corps Base Hawaii in Kailua, Hawaii, Dec. 25, 2010.

President Barack Obama and First Lady Michelle Obama greet service men and women and their families, during Christmas dinner in the mess hall at Marine Corps Base Hawaii in Kailua, Hawaii, Dec. 25, 2010.

President Barack Obama and First Lady Michelle Obama greet service men and women and their families, during Christmas dinner in the mess hall at Marine Corps Base Hawaii in Kailua, Hawaii, Dec. 25, 2010.