Poor girl. I'm surprised they didn't use a 737 (after the winglets had been removed and taken to a safe remote location ) or some other type that is still flying. It would make for a more realistic simulation for the federal air marshals or whoever is training in it.
I'm pretty sure the holes are from them training to use the STINGER HRET system on their fire trucks, not for "terrorist training". The holes are much to large in diameter to be from anything they'd use for anti-terrorism. The equivalent would be a 3-inch cannon shell, and I doubt there'd be anything left if that was the case.
Can't say I'm surprised that the admins missed that. I submitted a correction, but I doubt it'll be accepted much like so many good photos aren't accepted because they're not from the "chosen few".
The Stinger HRET has actually been around for almost 2 decades now. But like many ARFF things, they never get much media coverage. I know several UK airports have vehicles equipped with it as I've seen it featured in a couple of shows (don't remember names of them now), but if you look around next time you're at the airport, you'll probably find at least one unit so-equipped at most major airports.