Unreality check: first of all, should Winston be using his cellphone during the flight? Second, if that works, how come they don't use a cellphone later on when the radio antenna stops working? Okay, moving on!
Winston has five names left on the list, and he wants Guerrero to check them for programming experience. Guerrero cheerfully subcontracts this task to Sergei, who is the sketchy hacker-dude from two paragraphs ago. Guerrero decides that it would be best not to tell Winston that Sergei is using his computer.
Chance walks past a suspicious, shifty-eyed guy who stays in focus for just a little too long, and sits next to the squirrelly guy. He explains that if he has to be alone on these flights, he goes stir-crazy. I should point out that the squirrelly guy is reading a book, so Chance should leave him the hell alone. Chatty people on airplanes are the worst. He sourly introduces himself to Chance, but the interrogation takes an odd turn when it turns out he's hopped up on a couple of Percocets. Now he moves from "squirrelly" to "loopy". Chance moves on.
Winston and Chance have an odd conversation that I guess is supposed to be happening via intercoms or something. Except that neither of them has an earpiece or a microphone, so we just have to take it on faith that they're somehow able to hear each other. Winston has news from the cockpit! An electrical malfunction in the back is causing them to divert to Portland. Bummer. I mean, I like Portland (it's got Powell's Books!) but if you're trying to go to Seattle, it's about 150 miles short.
Chance is in the back of the plane taking panels off of walls and looking at circuit breakers. Can you do that? This appears to take place in a world where airplane security is somewhat more lax than I'm used to. He finds a wire that's been tampered with, and a guy with a gun jumps out at him. They fight! In the bulkhead area by the exit door. It's kind of cramped, but there's room for some punching and kicking. The gun goes off, hitting something vague below the floor. Chance takes the guy out and pulls a phone out of his (the bad guy's) jacket. He promises Winston that there will be no more surprises, as we see the fire starting belowdecks.