If this is really Bray (others seem to think otherwise) its still not THAT impressive. You would assume he's a either a FR, SO or JR...thats pretty much subpar. He came in at about 56 seconds. I've coached 2 kids in the last 2 years that can top a 56 consistently. They're brothers, and the younger one is about 5'4. Still, thats faster than a 5.4 40. I'd say he comes in around 5.0-5.2.
Sidenote: After watching that again, I'm skeptical. Thats a horrid track and it looks as if someone just grabbed a couple practice jerseys and threw on those kids. It may be some random JR High track meet...who knows.