Spitfire stepped back and pointed at the white dotted line running up the middle of the runway. "Any of you that wish to join the Wonderbolts and fight with us through whatever comes, step forwards over this line. Before you do though, I want to remind you that we are a force of elite fliers in service to Equestria and its princesses, and if it comes to war, we will be in the thick of it. It will be tough, it will violent, and ponies will die. If you can't handle the thought of that, do not cross that line."