Engine start sequence: a pilot in the cockpit of the A-1 Skyraider 'Lieutenant America' brings the radial engine to life on the ramp, with an A-7 Corsair II jet and the Skyraider 'Wiley Coyote' nearby. Radial-engine warbirds like the Skyraider require careful multi-step start procedures, often producing brief smoke as oil clears the cylinders. Project: 219252