well from the angle they're showing in the pic, and the angle it's in from it's surroundings, it's not a swastika, but a buddhist symbol, often found on buddhist temple gates in Asia.
Really though, I think it's a waste of money. I doubt most people will actually find the building offensive.
Well, you are both right and wrong: it is not a
nazi swastika, you're right about it. But you're wrong by saying it is not a swastika, because it is. Swastika is the sanskrit name of the symbol, which by the way predates Buddhism. I wrote about its history for my "symbols in history" class (I have a BA in History). For 3000 years it was used to represent the sun, life, energy and luck, until the nazi usage of it altered its meaning.
Anyway, unless the military here are really clueless, they knew before building this what shape it had (blueprints anyone?), so changing it right now is irrelevant.