The UAV arrives at the drop-off location, hovers, autonomously descends, and alerts the UGV of touchdown. The UGV control station then confirms touchdown, drives out of the holding “kennel” to a safe distance, and alerts the UAV it is clear to take off. The UAV can ascend and return to base, while the UGV autonomously drives off to its first area of interest to investigate.

Source: Helicopter Robot Airdrops Recon Ground Robot, No Humans Necessary – IEEE Spectrum