It is important to note that, much like the opposite literary device of Chekhov's gun, Bay's helicopter does not limit itself to an actual helicopter. We might find the principle exercised in conspicuously placed sunglasses, 360* action shots, Megan Fox, and large offshore prisons in the San Francisco Bay area.
See also: Weiner's window
Movie Critic 2: "Indeed, I can say the exact same thing about the character of Mikaela in Transformers 2."
Movie Critic 1: "It seems to me that we've experienced Bay's helicopter. That is, one must not put a scene in a movie if no one is thinking of blowing shit up in it later."