China Uses ‘Barrage Balloons’ To Protect Its Critical Infra From Missile, Drone Attacks

The balloons are known as barrage balloons,  to intercept low and medium-altitude flying cruise missile strikes.

The gas-filled balloons are tethered to the ground and, when deployed in large numbers, make low-level flights challenging attacking aircraft, missiles, or helicopters dangerous.

They  also complicate an adversary’s surveillance to photograph critical infrastructure by becoming visual obstacles.