KNOXVILLE, (Tenn) --- Bobby Holcombe's third trip to Boston was going just as smoothly as his first.
The only noticeable difference was he wasn't running.
This time he was playing coach. He watched Jennifer McKelvie cross the finish line, looked at the clock the time read 4:04. Five minutes later it happened.
4:09 the first explosion.
Holcombe heard it but thought it was construction.
Another runner turned onto the homestretch. The second explosion.
Everyone started running, no one knew what was happening but they knew it was bad.
"The police looked panicked" Holcombe told me.
It didn't take long for the coach to realize what happened.
" jenny approached and went right to her husband and gave him and her son a hug. She said I saw it all, we said what did you see? And she said I saw both bombs go off. That was the first time I heard the word bomb"
It took an hour for Holcombe to track down all his runners and their families.
In all close to 30 Knoxville runners were in Boston, none of them were injured.