I also wouldn't stand around staring at the sword and fogging up the glass.

And leaving Ando to stand alone in front of an open case? VERY bad manners. I'm astounded he wasn't nabbed for questioning- either on suspicion of having been involved or at least maybe seeing something. That wary guard was right there, too, and I know one of my questions would have been, "Where's your friend?"
Scout something out,
walk out of the museum and then make sure everything is frozen before you go back in to take it. If everyone is in slow motion that means security cameras are still rolling. That may come back to haunt them and then Linderman will have something to use on Hiro: "Do what I say or you're going to jail for a long, long time."