We have such a device. It's called not letting island fall into enemy hands and capping the bloody thing if it does.
Correct, nothing is better at protecting factories than a fighter.
But those no good lard arses would like to just wait a bomber to come, blast it out of the sky without any risk of losing their life and then went to some other base to conduct their dweeby actions...
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jochen Gefechtsverband Kowalewski
Units: I. and II./KG 51, II. and III./KG 76, NSGr 1, NSGr 2, NSGr 20.
Planes: Do 17Z, Ju 87,
Ju 88A, He 111H,
Ar 234A, Me 410A, Me 262A,
Fw 190F, Fw 190G.
Sieg oder bolsevismus!