Aziraphale glances at him, then takes another look around the room. As everyone else focused back on their own food and companions, it only serves to make him entirely sure he person is not there anymore.

"I'm not sure..." But it's clearly ringing alarm bells. In the state they're in, he's not sure if he's being paranoid or if they're being tracked down by, most probably, angels.

He looks at Crowley, nervous. "What do we do?"