Rocket

A Rocket, in the term of a spacecraft, is a a type of transportation that usually is used to allow individuals or objects to go in to space or other planets. In the case of Half-life series they are used to close dimensional rifts.

Half-Life
During the Black Mesa Incident aliens from the border world Xen were attacking in full force, and the scientists at the facility eventually resorted to using a rocket Black Mesa had to shoot up a satellite into space to close the increasing dimensional rift. HECU personnel intervened and killed the team that was attempting the launch. Gordon Freeman eventually is tasked to launch the rocket no matter what, as at the time it is believed that sealing the rift is the only way to stop the Xenian invasion. Later on, after reaching the fabled Lambda Complex, he was told that the rocket failed in it's job due to the rift still being help open by the powerful Nihilanth.

Half-Life 2: Episode 2
After Gordon and Alyx's escape from City 17 and the Citadel's collapse, Alyx attempts to make contact with White Forest to tell them about the codes they had received in the Citadel and the situation of the Superportal. Dr. Magnusson orders them to get to White Forest Base as soon as they can, believing that the codes Alyx is carrying can be used to close the Superportal via a rocket the base had been preparing for some time. Upon arrival to the base, Alyx and Gordon are put to work preparing the rocket for launch, and even defending the base from the weakened Combine's feeble attempts to stop the launch. When all is safe, and the rocket is fully prepared, Gordon receives the honor of launching the rocket and finally closing the Superportal and the last remaining link to the Combine Homeworld.

List of Appearances

 * Half-Life
 * Half-Life 2: Episode Two