He resists the urge to roll his eyes. For all that Coop is being panicky and paranoid, he does, admittedly have a point. It's a rare day that things go according to plan for them, Nate knows, but just once he'd like to have a job come off successfully and reap the rewards.

"Doorman stopped me for half a second, but I'd just dropped the invitation." It's nothing to worry about, he's confident about that. The invitation had a fake name on it and Nate hadn't stopped long enough for the guy to remember anything significant about him even if he was suspicious. "No stepping on bugs."

This isn't time travel, so Nate's not sure why he's freaking out about potentially cancer curing bugs, but he doesn't really care. He claps Coop on the shoulder, starts to walk down the alley and gestures for Coop to follow him. It's not far back to Nate's apartment, and there he can show him the piece and hopefully reassure him that they're didn't fuck this up. "Relax, would you?"