Ha!
I like the one with the kitten alignment, too...
This particular Marine seems to be a member of an engineer unit, since there's a lot of high-explosive toys displayed beneath his rifle. A grunt would carry a couple of extra loaded ammo boxes for a SAW, or a couple of belts of ammo
The larger version of the photo (got a red X the last time) shows what looks like a non-standard revolver to the right of his helmet. There's also a black Gerber multitool to the right of the 40mm grenades, and what might be a Hobbit Hole knife to the right of the M-16 magazines.
