Medium close up of a rattlesnake threatening to strike in a desert in Arizona, rattling the tip of its tail and moving away from camera.

A fighter jet takes off from USS John C Stennis air carrier at sea.

An armed guard carrying a machine gun guarding USS Forrest Sherman destroyer vessel. The guard walks out of the shot.

Medium close up of a rattlesnake coiled on dry ground in the threat position, rattling the tip of its tail.

Medium close up of a camouflaged rattlesnake striking at unseen prey in Arizona.

Side views of a Royal Air Force Spitfire airplane in flight in sky, flying over patchwork fields.

Side views of a Royal Air Force Spitfire airplane in flight in sky, flying over patchwork fields.

Back view of a bodyguard in a black suit and an earpiece walking by a fountain.

Carlisle, Cumbria, United Kingdom: Aerial view of historic towers of Botchergate at entrance to city of Carlisle.

A Queen's Guard dressed in a grey overcoat and bearskin hat carrying a rifle fixed with a bayonet exits a sentry box outside Buckingham Palace in London, England. The guard swaps the rifle over from his right shoulder to his left, turns, and marches across to the left. Heavy snow blows across the scene.

Medium view of a Queen's Guard dressed in a grey overcoat and bearskin hat standing on sentry duty outside Buckingham Palace in London, England. The guard carries a rifle fixed with a bayonet. Heavy snow blows across the scene.

Soldiers with machine guns stand silhouetted against a glowing sunset.