Plus, the possibility surfaced by AdamG's comment exists and is not desirable. Add the complex is in an urban area and collateral damage is never a good idea.

I'd go for Earmuff charges on the building, one for each of the fifteen floors...

However, even that seems a bit extreme -- why doesn't someone in charge just force them to reform? Shy Meyer tried, he really did -- but Congress stalled him (can't have civilian jobs cut...) and PersCom just waited him out and reverted to business as usual. It will take a phased plan and perhaps ten years to implement. Sadly, that is not the American way...