Not sure what caused it. Maybe the hard ride after a big greasy omelette and hasbrowns. Or the subsequent post ride payback and running to the bathroom. Could have been the pressure change of the Chinook. Or maybe even watching an episode of McMillan & Wife. Anyway, the end result was a night of being chased by zombies in my dreams, repeatedly waking up, falling asleep then drifting into another dream that ended in being chased by zombies again.