Well my military I've had my whole life, literally. We know and understand one another. He wouldn't leave me anymore than I would leave him. My severe is a rescue and suffered major wing trauma and can't fly.
My greenwing can fly very well but he is very food motivated and also likes the Lego movie. Always returns for those. Yes there is risk in all things but to fulfil my flocks needs as best I can I will take a such a risk in a low stimulation environment. The bonus for this is a mellow flock. They trust me and I them.