Star Wars: Episode IV - A New Hope: Jump to Lightspeed
Luke, Ben, Han Solo, and Chewbacca escape the Imperial Forces using the Millennium Falcon. They're being chased by Imperial cruisers, which are gaining on them. Han decides that the only way to lose them is to make the jump to light speed and prepares the ship for the jump. Luke is panicked and tries to rush Han to make the jump, but Han explains that they need to make the right calculations or it could spell disaster.