So Fringe has really opened up the prop vault for this scene, with all manner of creepy gadgets and souvenirs on display, although I really doubt A) Astrid having no idea about this place (even though her line "I wouldn't have slept at night if I did") and B) the FBI not wondering why, say, PORCUPINE MAN isn't in some kind of special evidence locker somewhere.
Walter explains he kept all this stuff: No. 1 because they're his and No. 2 because he has a "healthy distrust of the government." Which is fine, but given how many Fringe cases involved some psycho carrying on his work, you'd think he might be a little less cavalier about having so much weaponized creepery in one place. Especially if it's stuff like the hair-trigger amber-device-that-looks-like-a-walkie-talkie is just lying around unsecured for someone like Etta to pick up and almost encase them all.
Walter's flashlight falls upon the (cracked) Alterna-Universe Television Screen and Peter assures us all that's not a plot we're getting into this season, and a disappointed Walter says they'll have to go through everything to see what's still viable. Then Walter grosses everyone by picking up and tasting a two-decade-old doughnut hole that has, like, SHOOTS growing out of it, and declaring it still spongy and good.
Over at Observer HQ, the Loyalist who failed the security test has been brought in for interrogation, with Broyles watching via closed-circuit television. The Observer -- who looks a little like if Ralph Fiennes were an Observer -- plays him the security test, in which he's asked about his graduation from the academy, and what the weather was like on the day of his graduation. He hesitates on the last question and finally says it was sunny.
The Observer interrogator stops the recording and tells him the day of the graduation, it started raining at 10:30 AM and didn't stop until the evening. "You were never at the Academy," he says. Holden, the Loyalist, says he was "Class 58693 Tech A," whatever that's supposed to mean, but the Observer says Holden's a member of the Resistance. I do like the dispassionate way the Observers go about their work.
Probing mentally, the Observer learns someone forged the paperwork to get him installed in this position. Holden's face is turning red under the strain of resisting being read and his nose starts to bleed when the interrogator asks where the fugitives are hiding. He also asks about Peter Bishop. The Observer gleans that Holden overheard Anil say something, and asks what it was -- but then something else catches his attention: "'The Dove.' Who is the Dove? What is his real name?"