Presumably because it's high density and thus higher destructiveness vs detectability?
Although I guess they could also just paint their weapon black.
A different matter how they hide the engine's infrared signature. Perhaps by just not running it when approaching, except for the final course corrections.
Although I guess they could also just paint their weapon black.
A different matter how they hide the engine's infrared signature. Perhaps by just not running it when approaching, except for the final course corrections.