What drones?? Was the multi-axis robot looking for the ring autonomously or had it be preprogrammed to know the location of the ring? Again, What drones??
KUDOS to 537572 it is no wonder that kids today have trouble speaking standard American English when Machine Design Editors can't write or proof read what others have written. Well Done Madam...
Great summary - lots of good information.
And what happens to the aircraft when it is hit with an RPG or a 7.63 soft nosed round or a dust cloud when it is landing or 35 MPH wind or torrential rain?