Recon Probe

“Our first flying unit!

Cannot be hit by Blaster Droids, Excavator Droids, Detonator Droids, Defensive Cannons or other units lacking anti-gunship weapons.”

Information
"Hovering units use rapid fire rail guns to decimate rovers."

A player begins the game with two, but don't get more until a while later. Recon Probes are the first Gunships available to a player, and this means that many types of units and turrets aren't able to shoot at them.

On the other hand, their very low health makes it easy for units that can shoot air units to destroy them.

Recon Probes are often abandoned in favor of more powerful gunships as research continues.