The image is a photograph of a sign on the side of a building. The sign is white with black text and is attached to a metal pole. The text on the sign reads "McDonnell F3H-2N (F-3B) Demon". Below the text, there is a brief description of the Demon, which was designed and built by the McDonnell Aircraft Corporation. The Demon was a fighter jet used by the United States Air Force during World War II. It was a single-engine, single-seat aircraft with a single engine and a single propeller. The aircraft was built in the early 20th century and was the first of its kind to fly in the sky.

The sign also mentions that the Demon was built on the National Museum of Naval Aviation in Pensacola, Florida. It also mentions the Demon's name and the location of the museum. The background of the image is blurred, but it appears to be an outdoor setting with a concrete floor and a railing.