Peter smiles, and they hug, tightly, with Olivia hanging back on the sidewalk with Michael so that the Bishop boys can have their bonding moment. After Peter and Walter come up for air, a moved Walter says Peter never liked public displays of affection. Shall we cut the treacle? "Or going No. 2 in a public restroom. I remember that too," says Walter. Hey, my parents once had to bring me home from a camping trip because ... but this isn't about me.
In 2609, Windmark stares out massive windows over Manhattan, which is dark and grey without end. But at least it looks like we've finally managed to figure out flying cars! There's a billboard for Season 619 of The Simpsons, though, so there's that. Windmark is then summoned to the presence of some commander, to whom he announces that Anomaly XB-6783746 has been found. "It is being hidden in 2036," says Windmark. Aw, dude, "it"? You're really committed to this emotionless asshole routine, aren't you?
Naturally, the commander looks like just another Observer. I kinda hoped he'd have some sort of distinguishing feature, like a really big Pope hat or something. He asks why the anomaly is being hidden. Windmark isn't sure, but he figures there's a reason: "It should not exist, but someone wanted it to exist. Someone ensured its survival because they thought it was important," he says. Then they stare at each other for a few moments while the music swells. Kinda like a soap opera scene-closure, only much, much, much less melodramatic.
In 2036, Walter has spotted the building and the window he was looking out of in his vision in the tank, so the group heads inside, and Walter rings the buzzer of the corresponding door (I can never figure out once I'm inside which door belongs to which building, I'd be terrible at this). There's no answer, so he knocks instead. After a moment, Peter nervously reaches to get his gun ready.
Then there's the sound of multiple deadbolts being unlocked, and when the door finally swings open, Bryan Adams is standing there! I mean, it's September! He's got hair, including a couple days' growth of stubble. He's also delighted to see Walter alive. Walter explains about being frozen in amber for twenty-one years (it's funny how they've told this story so many times it's almost casual, like "I went to California for the summer").
Then September spots Michael, and walks over, pulling the hood off his little bald head and crouching in front of him. Michael puts his right hand up, September his left -- September is tilting his head somewhat like the Observers do, but now his movements are laden with much more feeling; it's remarkable to watch.