Before 4ZZ could start broadcasting in 1975, a transmitter was ordered from the U.S. But after it was lost on the dock in New York, 4ZZ's chief engineer at the time Ross Dannecker built the station's first transmitter.
Fake snow leopard attempts zoo escape
The event happens each year at various zoos across Tokyo, to remind staff members how to respond to a real animal escape.
The fake snow leopard mimed maiming a fellow employee, who was taken away in an ambulance, before succumbing to a fake tranquiliser gun.
Previous animal costumes used as part of the drill have included zebra, rhino, lion and orangutan outfits.