An Army Sikorsky R-5 helicopter, undergoing record trials, demonstrates its lifting power by carrying 17 persons and pilot aloft as female onlookers wave in Bridgeport, Conn., January 10, 1946. During the tests records were claimed for altitude speed and both altitude and speed with payload. (Photo by Anthony Camerano/AP Photo)

A baby otter has its first health checkup at Chester zoo, England on May 2, 2018. It was among five pups being weighed and microchipped. (Photo by Peter Byrne/PA Wire)

A lady wearing a mask feeds pigeons in St James' Park, as the spread of the coronavirus disease (COVID-19) continues, London, Britain, April 5, 2020. (Photo by Henry Nicholls/Reuters)

Sweden's Mikael Ymer slips and falls in the first round match of the French Open tennis tournament against Serbia's Novak Djokovic at the Roland Garros stadium in Paris, France, Tuesday, September 29, 2020. (Photo by Alessandra Tarantino/AP Photo)

Friends take photos of themselves on La Ultima beach which was reopened this week after it was closed for months amid the COVID-19 pandemic in La Guaira, Venezuela, Friday, October 23, 2020. Strict quarantine restrictions forced the closure of beaches across the country in March and reopened this week in hopes of revitalizing the battered economy. (Photo by Matias Delacroix/AP Photo)

Andreyka, a 10-month-old female bear cub, plays with Rommi, an Alaskan malamute, at the Siberian Zoo in the settlement of Listvyanka, Irkutsk Region, Russia on December 9, 2020. The bear cub, which was found in a weak condition earlier this year, now play-fights with the Alaskan malamute, who adopted her and has seen three generations of bear cubs brought up in the Siberian zoo and released back into the wild. (Photo by Yuri Novikov/Reuters)

Beach Policeman, Potomac River, 1922. (Photo by National Photo Company/Colorized by Patty Allison)