[Rinnwald]

The Russians were way ahead of you.

The TP-82, ostensibly for predator defense after landing in the Siberian tundra:

http://en.wikipedia.org/wiki/TP-82

They also set up an automatic cannon in one of their military stations, Salyut 3:

http://en.wikipedia.org/wiki/Salyut_3

[Larry Lucido]

Thanks. :-)