Can Covert Ops deploy radar in the enemys territory?
No one can deploy anything in enemy territory. However, the GDF Covert Ops has the Third Eye Camera – a combined TV camera, bomb and short-range radar – which he can throw on to any surface, even vehicles. So the GDF Covert Ops actually can get radar coverage in enemy territory (albeit over a small radius), but via only an item, not a deployable.
