Olivia and Broyles are scanning the crowd leaving the building when Peter checks in with Broyles to let him know they found the bomb, which is rigged up to a remote detonation trigger. Bomb squad doesn't yet know how long it will take to disarm. Broyles fills in Olivia, and suggests she help the police set up a 200-meter blast radius (going with the metric!). Olivia right away sees through his attempt to get her out of danger, and refuses to go. "Olivia, what that man said to you, that you're gonna die, maybe this is what he was talking about," he says, and Olivia says she can't live her life or do her job like that. Yeah, she's got a point; it'll be pretty difficult to avoid any Fringe work that puts her in harm's way. She looks resolute, if maybe a little scared.
Down in the basement, the technician is telling Peter and Lincoln that there's no reason for them to be there, since the thing's wired with multiple redundancies that could take hours to disarm, and it could be triggered at any time. But since everyone working for Fringe apparently prefers to risk needless, instantaneous death, Peter ignores that and asks if he can tell what frequency the bomb is rigged to receive. And it looks like he could, because Broyles gets a call from Peter telling him to get everyone to tune their radios to 432.5. That's because Skeeter and the Hound Dog are giving away tickets to this weekend's Skynyrd show to the fifteenth caller.
Meanwhile, Duncan, who is loitering and not evacuating, spots Judge O'Malley and confronts him. It doesn't improve Duncan's mood that O'Malley doesn't even know who he is. "You took my family from me. And I'm gonna take you away from yours," he says. The judge looks mildly confused, and then Duncan pulls out his transmitter and pushes the button, but... nothing.
And that's when Fringe and the SWAT team rolls in, with Broyles telling Duncan that they blocked his signal. As agents surround Duncan and the judge, guns drawn, Olivia says nobody wants to hurt him, so if he puts his hands up, everyone can just walk out of there.
Except that even though Duncan's homicidal and possibly suicidal, he still knows the value of a good backup plan, and opens his jacket to reveal explosives trapped to his torso. "Nobody's going anywhere," he says.
Olivia talks him down for what feels like half an hour or so, and she gets more and more urgent in her assurances that "nothing is written in stone" and "you and I -- we don't have to die here today." I mean, even Broyles is giving her the side-eye like, "This ain't even ABOUT Duncan anymore, is it?" Duncan still gripping his torso bomb detonator, looking unsure but still nuts, and Olivia pleads with him to think about all the people here, and how they have children too. After a few tense moments -- I mean, not really, it's not like this show's going to blow up its entire cast halfway through the season -- Duncan puts the detonator down and starts sobbing like a little baby while agents cuff him.