Pull

Pull is a multiplayer medal in Halo: Reach. The medal is awarded for killing a jetpacking opponent. It was revealed post-beta along with several new and updated medals in the 05/28/10 Bungie Weekly update.

Based on pre-release gameplay footage from IGN and GamesRadar, the medal appears to be awarded for killing an opponent that is flying with the jetpack.

Trivia
The name of this medal is most likely a reference to skeet or trap shooting, where clay pigeons are launched into the air when the shooter says "Pull!" The shooter is generally armed with a Shotgun, due to spread shot.