Chopper One - Season 1 Episode 6 The Drop
Overview: When the daughter of a doctor is kidnapped. The kidnappers then call her father to tell him of their demands. And it seems he wants the police to make the ransom drop using a chopper so Don and Gil are told of this. The father only wants her daughter back, so Don makes a suggestion that he parachute out of the chopper after Gil makes the drop. So they do it.