Dodonna: The Empire doesn't consider a small one-man fighter to be any threat. An analysis of the plans provided by Princess Leia has demonstrated a weakness in the battle station. The approach will not be easy. You are required to maneuver straight down this trench and skim the surface to this point. The target area is only two meters wide. It's a small thermal exhaust port, right below the main port. The shaft leads directly to the reactor system. A precise hit will start a chain reaction which should destroy the station. Only a precise hit will set up a chain reaction. The shaft is ray-shielded, so you'll have to use proton torpedoes.
Wedge: That's impossible, even for a computer.
Luke: It's not impossible. I used to bull's-eye womp rats in my T-Sixteen back home. They're not much bigger than two meters.
Dodonna: Man your ships! And may the Force be with you!