President Bush met Staff Sgt. Michael McNaughton of Denham Springs, La., fiteen months ago at Walter Reed, where he was recovering from a bad wound (he had been in Afghanistan). His right leg had to be removed above the knee, he lost two fingers on his right hand and he suffered shrapnel wounds in his left leg. The president and Sgt. McNaughton had talked about running, and Mr. Bush promised to run with the soldier when he was "fully recovered and able to run with his prosthetic leg." Bush kept his promise. They ran together at the White House.