for instance, when i am about to transfer from the lower wing up to the top wing, i make sure i turn to look at walt and wait for his signal (pointing to the top wing) before i begin my move. we also have additional signals in place for emergencies or for cases where it’s necessary to change something before the end of the routine; for example, if walt needs us to look at him to get another signal to either stay put or move into the cockpit, he simply shakes the wings. if we need to get his attention, then simply by moving our foot on and off the 