Shielding would also add weight to the drone, which would limit their range and capabilities. A swarm of advancing drones could collectively take evasive maneu

Shielding would also add weight to the drone, which would limit their range and capabilities. A swarm of advancing drones could collectively take evasive maneuvers to increase their probability of success. As individual drones drop out of the sky the remaining drones could reposition themselves, much like a split frame in bowling, making it harder for one of these devices to rotate back and forth and hit all of them.