I believe that Allall aircraft must be controlled under ATC's instructioninstructions to fly safely especially when take-off and landing. And, Most ATC'smost ATC instructions are conducted by ground radar which controllers use.
But I know that the stealth aircraft (including B-2, F-22, etc.) doesn't bearen't captured on radar display owing to their stealth ability. If so, Howhow does a controller give instructions like radar vectorvectors to stealth aircraft?
I know that there's are primary and secondary target when using Radarradar, and the controller must use primary target to vector aircraft. I guess stealth aircraft can be captured by secondary radar but not primary target.