From a timeline point of view the setup was a little silly. Colt and the other guy got that arranged in less than half an hour - including the explosives. riiigght.
It was a bit much, wasn't it? Also, why wasn't every state, county and municipal law enforcement agency in that part of the state running lights-and-siren to the high school? The mob got its reinforcements there, but the good guys couldn't?
Good to see character actor John Kapelos, whom I mostly remember for John Hughes movies in the '80s.