Frank Sinatra getting off a helicopter with a drink in hand, photographed by Yul Brenner in 1964

via reddit

Mil Mi-17 and Mi-24.

Above Chicago by Austin Neill

Mi-28UB

A U.S. Marine Corps UH-1Y Huey assigned to Marine Aviation Weapons and Tactics Squadron One (MAWTS-1) lands during the final exercise

Mil Mi-28, NATO reporting name: Havok.

Mil Mi-28, designación OTAN: Havok. 

Миль Ми-28, по кодификации НАТО: Havoc

Vietnam War, flight formation of Piasecki CH-21C Shawnee helicopters, commonly known as the “flying banana”. 

Mil Mi-24 Hind, the world’s most prolific, most used attack helicopter, from the mountains of Afghanistan, the Valleys of Perú, the jungles of Nicaragua, the African Bush, the Iranian marshes, the Ukrainian plains, to the Iraqi deserts and beyond!