We believe that Russia had a fleet of about 192 SU-25s at the start of the war, though we don't know how many of those are actually operational. Some Americans have proposed sending some of their A10 Thunderbolt II aircraft,. better known as the War Shock to Ukraine. It's been described as a flying Gatling gun because basically it's an aircraft wrapped around a giant armoured cannon. They could use it to shoot down missiles and drones and they could also use it for hitting ground targets.