Buffy really has no idea what very special forces do. She can make several guesses, but since she's seen no evidence of vampires, demons or other monsters, she's wrong about most of those guesses. When the wagon wheel lost power, Buffy had gone out into the complex to check on people, to find out what's going on and maybe to find out something she didn't know before.

However, when Steve calls her back, she goes without any idea of what to expect. It turns out not all of this stuff is foreign. Buffy turns all the equipment over, giving it a confused look. "Are you sure this isn't The Initiative?" she asks at one point as she plays with the night vision goggles. "Do these make me look fat?" Yeah, she's got the goggles on and is looking at Steve. Honestly, she really does know her stuff, though he probably doesn't believe it right now.

She slides the vest over her head, gets it tangled up in her hair (velcro plus long hair=head-cro....or something like that). "Seriously," she says from the depths of the vest, "I usually just wear a cute top and heels to fight evil."

She also chimes 'rolling' in response to 'let's roll out'.