Vacuum drone
From Tardis Wiki, the free Doctor Who reference
Vacuum drone were flying drones created by the Villengard Corporation. They were used on Kastarion 3 in 5086 to hoover up the smoke on its battlefields. The Fifteenth Doctor said this was "so nobody can choke to death before they are safely shot." They allowed Ruby Sunday to see the planet's sky. (TV: Boom [+]Loading...["Boom (TV story)"])