Burn Notice2007

Michael Westen:
[voice-over] The typical floor is concrete slab over 20-guage steel pan with the steel trusses spaces thirty inches for support. When you cut through a floor, the thing you have to worry about is wiring. Cut into the wrong wire, and you'll set off the building alarms, electrocute yourself, of both. If you don't want a chunk of concrete crashing through to the floor below, you need to drill a hole, and anchor the slab. A concrete saw cuts it like butter. If you've done your planning right, you'll be dropping in to a blind spot in the security system, usually behind an interior wall.