Most of that equipment was given to the Afghan military. We gave them the works so they had a chance to keep the country under control. Along with the equipment came training. You don't think the Taliban is smart enough to not kill all the Afghan pilots we trained? Hey Afghan military pilot guy, you are now a Taliban pilot or everyone you've ever known will be tortured/killed/enslaved. You will train more Taliban pilots until we have no use for you and then we'll kill you and everyone you know anyway.