That's where Vince is fiddling with the skylight controls, and then floating gently down past some planet models suspended in the air, down towards a pedestal displaying a sizeable chunk of meteorite, and a nearby glass case displaying a few more. He makes his way over the glass case, and then makes the mistake of setting down his flashlight, which must be pretty heavy, because when he lets go he starts to float upwards again, and he grabs the flashlight to ground himself.
Outside, the Fringe gang is pulling up, meeting Broyles, who tells them that BPD's sending over a unit, and the curator says there's a night watchman on duty and all the wings are individually locked from the inside. "Seems pretty solid," he says, and Peter's the one who spots the weighted boots near an outside wall. "Not solid enough," he says, and the Fringers pick up the pace a little.
Inside, Vince is pushing a bunch of buttons on a security panel -- while hanging in the air -- which disables electric eye beams in front of the doors, and he lets Vince in, who wants to make sure he disable the alarm. "I did exactly what you told me. The way we practiced," he says. Krick managed to turn Vince into a superthief pretty quickly! Krick grabs hold of Vince's arm and hauls him through the wing over to the meteorites.
Meanwhile, the night watchman is guiding the Fringe team through the museum and confidently saying that if they were being robbed, he'd know, because they've got cameras on all the doors. "They didn't come in through the doors," says Peter. Well -- actually, Krick did! So much for your cameras, night watchman, and I don't mean Tom Morello.
While Krick is busy scraping stuff off meteorites, Vince is the one who hears the approaching Fringe Justice team and sees the flashlights sweeping through the wing, and when Fringe arrives, Krick takes two seconds to think things over before bolting while the night watchman fiddles with the locked door. Poor Vince starts yelling, "You can't just leave me!" I'd probably add, "Dr. Krick of Frost Aerodynamics! Don't leave me, Dr. Krick of Frost Aerodynamics!" Vince unbuckles his weighted belt, and quickly rises up through the planets, before grabbing a hold of an astronaut, realizing that maybe the open skylight ought to be respected. But his hand is slipping.