Blake's 7, Series Four

[Dr. Plaxton is outside the ship, in a force wall bubble, installing the stardrive as the Scorpio is being engaged by Federation ships]

Vila:
Plasma bolt fired.

Soolin:
Thirty seconds to impact.

Dr. Plaxton:
[over communicator] One more connection to--

[Avon cuts her off, then begins pushing some buttons]

Tarrant:
[shocked] What are you doing?

Avon:
Programming in the main circuit drive.

Dayna:
You can't do that! That main drive will fire as soon as she makes the final connection!

Soolin:
Fifteen seconds.

Avon:
We can outrun that bolt. She's dead either way.