Nope, tank lighting and a 4.0-5.6 lens (I think, though it's possible I was using my 70-200 2.8).
Thank God for the high-ISO performance of the 7D, combined with a bit of reduction from Neat Image.
Edit: That answer applies to the shots shown in this thread, if you were asking about the other shots in the photo gallery, yes. A few were shot with on camera flash but most of them I used a strobe for.