Interesting idea, but the fireman has been caught in just the wrong position. I'd have liked to be able to focus on his face/mask or the sledgehammer. These are both currently obscured. Catching him at the point where the glass was breaking would really transform the picture. I'm not sure you exposed for the fireman, and I think this would also have helped.
I will be interested to here the story behind this one. I know it must have been hard to shoot but it is a bit hard to make out the details on firefighter. At little editing with something like PhotoShop could have made him really standout..6