B-2 can do that because it is purpose-designed to avoid radar detection, and because it can remain a considerable distance above the target, letting gravity and

B-2 can do that because it is purpose-designed to avoid radar detection, and because it can remain a considerable distance above the target, letting gravity and aerodynamics do the last bit of the work in guiding the bomb to the target, which is generally building-sized not person-sized. How do you propose that we stealth a drone that has to fly literally right to the target's face?