Sydney eyed him right back, but with a mixture of amusement and merriment. He hadn't outright kicked her out, which meant that he was an alright bloke. So in her books, he was 'friend', not 'enemy' coworker, and that made her extremely happy. She didn't actually have an angle--in fact, if he'd been friendly, there was probably a good chance she would just have let him be. But Sydney was never the type to back out of a challenge.
"Classified huh, cool beans," she said with a smile. "I think I could take you though." She flexed an arm jokingly, kissing one bicep, then the other. "These babies are the real deal." She let her arms fall to her side again as she scootched the chair in the room closer to his desk and sat down, crossing one leg over the other and getting comfortable. "You're no good to the distressed citizens of Seattle if you're starved and sleep deprived, you know," she said. There was no technical indication he wasn't sleeping well, but she just got the feeling that someone who worked this hard probably worked pretty late into the night on more than one occasion.