Year of the Rabbit celebration's in Dublin, Ireland on January 29, 2023: Wang Zhi Ning during her Peking Opera Solo performance. (Photo by Nick Bradshaw/The Irish Times)

A red deer stag in Bushy Park, southwest London, pulls a comical face for the camera in the second decade of November 2023. (Photo by Andrew Wood/Caters News Agency)

Lola Aylmer, 25, stands inside the artist Gemma Anderson-Tempini's infinite laundry mirrored room, which is part of a transformed Victorian house, in Leeds, UK early November 2023. (Photo by South West News Service)

Squirrels are seen on a tree branch at a park as temperatures rise with the arrival of spring season in Ankara, Turkiye on March 27, 2024. (Photo by Evrim Aydin/Anadolu via Getty Images)

A model presents a creation by designer Andreas Kronthaler as part of his Fall-Winter 2023/2024 Women's ready-to-wear collection show for late designer Vivienne Westwood's namesake label during Paris Fashion Week in Paris, France on March 4, 2023. (Photo by Sarah Meyssonnier/Reuters)

A Midshipmen from the Naval Academy eyes the Navy mascot behind her before the first half of the the 125th Army-Navy game at Northwest Stadium in Landover, Maryland, on December 14, 2024. (Photo by Danny Wild/USA TODAY Sports)

“Don't Leave Any Food On Your Plate”. The giraffes at Nairobi's Giraffe Manor are totally at home with humans. They will eat out of your hand, or even off your plate. Photo location: Giraffe Manor, Nairobi, Kenya. (Photo and caption by Gavin Werbeloff/National Geographic Photo Contest)

“Igor Sikorsky (May 25, 1889 – October 26, 1972), born Igor Ivanovich Sikorsky was a Russian American pioneer of aviation in both helicopters and fixed-wing aircraft. He designed and flew the world's first multi-engine fixed-wing aircraft, the Russky Vityaz in 1913, and the first airliner, Ilya Muromets, in 1914. After immigrating to the United States in 1919, Sikorsky founded the Sikorsky Aircraft Corporation in 1923, and developed the first of Pan American Airways' ocean-conquering flying boats in the 1930s. In 1939 Sikorsky designed and flew the Vought-Sikorsky VS-300, the first viable American helicopter, which pioneered the rotor configuration used by most helicopters today. Sikorsky would modify the design into the Sikorsky R-4, which became the world's first mass-produced helicopter in 1942”. – Wikipedia

Photo: Westland Sikorsky H-5's, used by British European Airways Helicopters, which fly between London and Birmingham. The Sikorsky H-5, (aka R-5, S-51, HO3S-1, or Horse) (R-5 until 1948; company designation VS-327) is a helicopter built by Sikorsky Aircraft Corporation, formerly used by the United States Air Force, and its predecessor, the United States Army Air Forces, as well as the United States Navy and United States Coast Guard (with the designations HO2S and HO3S). (Photo by Harrison /Topical Press Agency/Getty Images). 22nd May 1951