[quote=@Rtron]
<Snipped quote by DJAtomika>

Nothing to serious for now. 

A wild animal attack should suffice for now. Hopefully something that can get past the turrets....weather can confuse them right?
[/quote]

Probably safe to assume they have a variety of visual sensors, including infrared, because they'd need to be able to operate autonomously in a large variety of conditions while being sophisticated enough to ID friendlies.