Walternate ignores this not-insignificant point to ramble on about whether Peter ever wonders what it's like to wake up and just for a moment think that everything is as it used to be, but then realize that it's not? "Soon everyone here will experience loss the way that all those over there did. Air, water... light, even," says Walternate, who adds that Peter will experience loss the way he did.
Watching it again (I'm still mystified at the way "watching it back" has entered the lexicon) it's notable that Walternate stares straight ahead the whole time and never really seems to be looking directly at Peter. At the time I chalked it up to him being crazy, kinda like Michelle Bachmann. Anyway, Peter wants to know what he means by that; Walternate says, "You destroyed my universe, son, and I'm going to destroy yours. But not all at once."
From there we go to the Fringe team descending on the wormhole in Central Park. Ella tells Olivia that Peter's still not picking up his cellphone -- are you letting it ring more than once? -- and another agent tells her that they spotted a bus near the perimeter breach. Again, "breach" is a pretty strong word when you only see fit to restrict an area just by putting up a "Do Not Enter! We're Totally Serious!" sign. Looks like Ella's moved up pretty quickly for an agent who's barely old enough to drink legally too.