In the 2270s, CommanderSpock stole a thruster suit and emergency evacuation thruster pack from the USS Enterprise during its mission to learn more about V'ger. The onboard computer warned that once the igniter was armed and fired, the thrusters would burn for ten seconds. He used the pack's single high-yield thruster burst to propel him through an aperture to V'ger's inner workings, before disconnecting from the pack. (Star Trek: The Motion Picture)
For information on the design of the emergency evacuation thruster suit filming model, see: Thruster suit model.