Yeah, you can see R2D2's base in the lower left of the photo... and those appear to be terminator skulls on the shelf above C3PO's head. Ironic that half the time I am on here posting about things I shouldn't have seen and then I come to this thread only to see things I was supposed to see and missed!
I'm 100% certain it's from the Terminator 2 gift shop. I was shocked too, but I have other pictures with the Terminator stuff in the back and I can find them if you guys would like more proof. The only time I've been to DHS I had a disposable because I forgot my digital cameras that day and I haven't developed those yet.