President Barack Obama and first lady Michelle Obama arrive for a memorial ceremony, Wednesday, April 9, 2014, at Fort Hood Texas, for those killed there in a shooting last week. President Barack Obama is reprising his role as chief comforter as he returns once again to a grief-stricken corner of America to mourn with the families of those killed last week at Fort Hood and offer solace to the nation.(AP Photo/Carolyn Kaster)