There's a brief pause in Jake's dramatization of Independence Day when he looks over to where he'd heard someone interrupting him, which kinda jars him out of his groove. He lets his hands drop, which let it be known hadn't touched any of the weird and really tempting buttons, but instead had been pretending to control a large joystick for intergalactic gun-shooting at other not-currently-existing enemy spaceships.

"Wow, who brought in the Fun Police?"

Jake lets out a laugh at the end, partially in response to his own joke (yeah, he's still got it) and partially to encourage the other guy to do the same. You know, because it's funny and he's kind of hilarious.

He hops off the captain's perch and heads over, all casual not at all apologetic for playing Pretend Space like he's five.

This guy is obviously not the captain, judging by the slight hesitation in his voice and the way he talks about the captain, like he's a subordinate and not ... well, the man himself. There's also the different clothing. These Enterprise guys all have the same synthetic cloth pyjama-like uniform, which looks like it could go up in flame if someone pushed them a little close to a fireplace. At least they seem reasonably comfy.

(Why couldn't Holt have asked them all to don Star Trek uniforms instead of ties? Geez.)

"'Sup." Jake holds out a hand. "Jake Peralta."