CAPT. FLORENT GROBERG, U.S. ARMY: So I hit him with my rifle. That's when I felt I hit a vest under his clothing. And so at this point on all I could do is just get him away as far as we could. Grabbed him by his vest and tried to push him down, throw him. So Mahoney, the whole time Sergeant followed me into this and, you know, as I'm throwing him down, Mahoney is throwing him down and then he detonated at my feet.</s>JOE JOHNS, CNN SENIOR WASHINGTON CORRESPONDENT: Capt. Groberg is from Bethesda, Maryland. He's retired now. When he was in college at the University of Maryland, he was a standout distance runner there. So obviously, that leg is very important to him, continues to work on that recovery. The President of the United States has already met once with Groberg back in September, on September 11th of 2012. This will be a second meeting for him and the retired army captain. Carol -- back to you.</s>CAROL COSTELLO, CNN ANCHOR: All right. Joe Johns reporting live from the White House. Thank you. Still to come in the NEWSROOM -- determining a split second of sound -- the lessons investigators learned from a past plane tragedy that could help them decipher what caused that Russian jet liner to go down.
Army Capt. Awarded for Tackling Suicide Bomber