[dron3r]

You can jam signals they rely on, like GPS and cellular, but there are already drones that are capable of flying on vision alone, so no.

[jojobas]

INS chips providing enough precision for autonomous operation over last few kilometers are rather cheap nowadays too.

A small-ish plane frame could easily deliver a grenade from sleepy suburbs 10km straight to the Oval Office with only few minutes of warning (assuming somebody could actually detect it in time at all). We're just lucky nobody seems to be bothered to do that.

[implements]

Well, if you managed to detect and track an incoming drone you could ‘jam’ its camera with a high-powered laser - or something that threw up a curtain of flares or burning magnesium, or whatever.

[brendawalsh]

Does that work for a fleet of 10 drones? 100 drones? 1,000 drones?

[HarryHirsch]

A drone swarm dropping hand grenades is like targeted artillery. Experience from WW 1 is that it's straightforward to defend against artillery fire, just retreat into a shelter. A target that's worth five dozen drones with grenades can afford a bunker.

[Zenbit_UX]

So simple in your scenario... The target just needs to jump in their nearest bunker, better hope they happen to be attacked outside their bunker eh?

[xvector]

Not sure why you're being downvoted. Legitimate concern.