Any low-flying, slow ground-attack aircraft that is designed to strafe is going to be vulnerable to shoulder-mounted missiles. I would have more faith in the s

Any low-flying, slow ground-attack aircraft that is designed to strafe is going to be vulnerable to shoulder-mounted missiles. I would have more faith in the survivability of a flying tank like the A-10 (the thing is built with a titanium bathtub enclosing the pilot, redundant hydraulics, manual cable control backups, and the engines mounted in a configuration that somewhat confuses the thermal signature of the exhaust), which has demonstrated the ability to fly home after being shot full of more holes than swiss cheese, than in most other ground-attack craft. Helicopters, even a similarly over-armored model like the Russian Hind, don't have that kind of durability. Maybe we'll have close-air support drones eventually, but I would imagine a drone that has the flight characteristics to be a good gun-platform for strafing is still going to be vulnerable - this is flying in at altitudes where aimed small-arms fire can do damage.