At the presentation, Sarah's all professional-looking in a business suit, bun and glasses. The guy Chuck helped with computers earlier introduces Sarah as Dr. LeFleur's associate from Sydney, Australia, Dr. Ava Anderson. And, yay, Yvonne gets to speak in her native accent! And it's really lovely. I want her to be full-time Australian, but I'm guessing that wouldn't make a great cover. Or would it? No one would suspect an Australian of being CIA, would they? Sarah starts talking, but someone runs out of the room. She excuses herself and chases him out of the room. Casey heads to where he'd been sitting and sees the bioweapon. He has the room sealed, and says no one will get in or out. Sarah's running in her sexy business suit through the warehouse-looking halls of the hotel.

Chuck gets a call during his test, and a menacing photo of Casey comes up on his iPhone (again, why doesn't Casey have to take the test?). Chuck says he has to take the call. Buster doesn't want any phone calls during the test, but Chuck ignores and answers it. Casey tells Chuck about the bioweapons mess he's in and tells him to get to Jill and see if she has an antidote. Because there's only about an hour before he and everyone else in that room dies. Chuck doesn't think Jill wants to see him, but Casey points out that the dying that is going to happen is more important. Chuck takes off, and Buster picks up his test and throws it away, saying, "I guess someone doesn't think saving lives is important." Heh. But apparently Buster doesn't think saving paper is important, because that test can be recycled instead of thrown away.

Chuck's trying to tell Jill he's a CIA agent and they need to go to the conference center where the bioweapon has been released. She doesn't believe him and is going to call the police, but he shows her all of the agents with him. She knows he's finally telling the truth and tells him to hold on. When she goes back in, he looks at all of the big, serious agents and says, "She's pretty cute, right? We used to date." It's seriously cute. But I also wonder why they would need this many agents to come to the door with Chuck. In case there's danger? To escort Jill out if necessary? It seems like overkill, and I don't think the CIA would waste these resources just for Chuck to show off. Although maybe to convince her... so I guess I'll allow it. Because, you know, I have a choice in the matter. Jill's ready. Chuck tells her to stay close and not to be scared. I love that he's the big, tough agent here -- and she's totally buying it. I think she must not have known Bryce was an agent, either, or she wouldn't have been so surprised. Which indicates they probably weren't together all that long.