Wait a minute ... the engines in the game are fusion reactors? Then it's all illogical, because fusion reactors can't explode. If some parts of the FR get damaged (like the magnetic field projector), the fusion simply stops, because it can't go on under the circumstances (like air pressure, temperature, e.g...) that are on earth (i know, lousy english, but i'm not a native speaker). So, there couldn't be an explosion, like of a nuclear reactor.
However, it's not really important, and the game is great, no matter if nuclear, or fusion reactor.
"Der Tiger sucht seine Beute"