As we meandered our way past the stunning cliffs of Big Sur, munching happily on deli sandwiches and Frito corn chips, Kimberly decided she wanted to take a picture. I took the stick, mouth full of turkey sandwich and Frito bag still in my left hand, as she opened the window and leaned her elbow out into the slipstream, creating an interesting lesson in aerodynamics that neither one of us will ever forget. I could figure out the specifics if I really wanted to, but the bottom line was that the window and elbow combination somehow changed the airflow through the cockpit into a whirlwind of sharply reduced pressure. I know this, you see, because every single last Frito corn chip suddenly departed the bag in my hand, swirling around the air above the bag in stunning cyclonic form. Mouth full of sandwich and hands full of bag and control stick, I could only watch, half laughing, half mortified, as the chips danced all around the cockpit air.