The Jetpack is a vehicle in GTA: San Andreas. It is quite unique as it floats like a weapon when not in use and is activated when CJ walks into it. It was originally owned by the military deep underground in area 69 but Carl Johnson steals it for the Truth in the mission Black project. CJ takes it to Verdant Meadows where it re-spawns from then on. CJ later uses it to attack a military train transporting green goo in a later mission. The Truth isn't very good with it and seems to be the only person other than CJ who knows that CJ has it. The only other way of getting the Jetpack is through cheats.
When using the Jetpack the player can only fire one handed weapons.