Remote-controlled, perhaps (8)
I believe the answer is:
unmanned
'remote-controlled perhaps' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for unmanned that I've seen before include "Lacking a crew" , "Not requiring a crew or staff" , "Lacking personnel" , "Needing no crew" , "Without staff or personnel - made weak" .)