Jack Karen, Bill, and Jack wouldn't have been able to call each other over their cell phones when Jack was on the plane because there's no signal at that altitude. See more
President Charles Logan
[after agent Pierce is beaten up by Logan's men, Logan offers to allow Pierce to remain a Secret Service agent elsewhere if he keeps his mouth shut
"... Is my offer acceptable to you?"
[Pierce, tied to a chair
"There is nothing that you have said or done that is acceptable to me in the least. You're a traitor to this country and a disgrace to your office. And it's my duty to see that you're brought to justice for what you've done. Is there anything else, Charles?"