An Army Sikorsky VH-34s Choctaw helicopter once used to transport President Dwight D. Eisenhower sits in a field at the 309th Aerospace Maintenance and Regeneration Group boneyard Thursday, May 14, 2015 at Davis-Monthan Air Force Base in Tucson, Ariz. President Eisenhower became the first chief executive to be transported by helicopter. Presidents Eisenhower and John F. Kennedy were transported in VH-34 helicopters and VH-34's served as “Army One” from 1958 through 1963. (Photo by Matt York/AP Photo)

Crashed cars in Finchley Road, north London. (Photo by Hulton Archive/Getty Images). May 1924

Shortlisted: Sólheimasandur aircraft crash site, Iceland by Ollie Conway. (Photo by Ollie Conway/Historic Photographer of the Year Awards 2019/The Guardian)

A helicopter drops water over a wildfire as a firefighter works to contain it in Benahavis, southern Spain, May 19, 2015. (Photo by Jon Nazca/Reuters)

People take photographs of waves crashing against the harbour wall on January 3, 2012 in Porthcawl, Wales. (Photo by Matt Cardy/Getty Images)

A man looks at waves as they crash against a lighthouse in the northern Spanish village of Viavelez, Spain January 13, 2017. (Photo by Eloy Alonso/Reuters)

A female motorcycle cop directs traffic wearing crash helmet, Haywarket Square, Boston, Massachusetts, 1979. (Photo by Spencer Grant/Getty Images)

Relatives of the crashed AirAsia plane passengers pray at Juanda Airport, in Surabaya, Indonesia, 31 December 2014. Indonesian rescuers retrieved three more bodies from the sea on 31 December but the search to recover more victims from the AirAsia plane crash was hampered by bad weather, the recue chief said. AirAsia Indonesia flight QZ8501 crashed into the Java Sea on 28 December, about halfway through a two-hour flight between Surabaya, Indonesia's second largest city, and Singapore. (Photo by Made Nagi/EPA)