You watch the safety video in the terminal and learn the emergency oxygen system looks like an alfoil bag with plastic window worn by an astronaut in a sci-fi movie made in the 1950’s. Prior to boarding you learn that should emergency oxygen be required, the rear door will be opened and luggage will be jettisoned. This gets fresh air in the plane and allows passengers to stop looking like astronauts. In the terminal you can buy a microwaved pastie for $2. ...