Being a former Shadow 200 "drone" aka Unmanned Aerial Vehicle Operator, I've got a bit of additional context on this type of thing. For the Shadow, they have a

Being a former Shadow 200 "drone" aka Unmanned Aerial Vehicle Operator, I've got a bit of additional context on this type of thing. For the Shadow, they have a Tactical Automated Landing System, which uses active radar to do a completely hands off computer controlled landing. I'm sure that by now they've built a bigger version of TALS for bigger UAVs by now. I was using the smaller Shadow TALS in 2002-2003.