The shot where Julia is looking back from the hill and the crowd is reunited in the cafeteria is top-notch. By the way, how the hell did she discovered the tape solution? If I'm not mistaken, they don't explain that part. Maybe I missed some details.
Here I was thinking they poisoned the suit respirators to kill the cleaners but this last episode made it clear the tape was the weak link in the suit.
That's funny. I though the same thing too! Poison in the respirators, and the tape switch was to get a worse seal to give her time to get out of the suit. There i was, saying "come on, get it off!" right up until the birds came flying...