Call of Duty Black Ops - How to stop the rocket aka How to destroy Soyus 2

Here I will tell you how to "abort the launch at the axillary control bunker.

1.) First, you will need to blow a hole through the wall into the control room.
Go close to the C4-package and hold in the F-button.
Then get some space between you and the explosives.
Press the left mouse button to blow it.

2.) Your mate will here have big problems to stop the rocket because it is already launched.

3.) You need to pick up the Valkyria Rocket launcher (guided-missile rocket launcher) and aim at the weapon at the rocket.  Click right to aim with the weapon, then click and hold the left mouse button.

4.) The just aim at the widest part of the rocket (easiest to hit) and the camera inside the missile will show the flight.

5. Done.