Tim's never fast to wake up - for that, he'd probably need to get more sleep - so he's one of the last in the room up from his slab, and still groggy. Still, he heads for Cass's side right away - the safest place in any unknown situation is right next to her, after all. It isn't until he reads the warning on the door that he really wakes up, adrenaline flooding his system.

"Wait."

For just one word, it carries a lot of urgency with it.