BHFE = Big Huge Fucking Explosives
you get a cookie. :)
This is similar a scene in Appleseed where Deunan is trapped with terrorists in a building when charges are set off to collapse the upper floor and the exits to the building.
That was actually the inspiration for largo's action here. Gotta love appleseed, just the believable insanity of sokaku the EOD expert using explosives to trap all the terrorists so he can collect a bounty on them :P