If it had happened on Monday, I would have taken the jackhammers and used them. Today? Probably try to find a way to repurpose the CD shredder to attack people. Failing that, we have a fair amount of computer equipment that is going to be surplused, throwing it on the bad guys as they come up the stairs might be very effective.

Another option would be find the proverbial red tape and use it to set up webs to catch and hold the bad guys.