"The airport was designed to handle 24 million passengers per year, but in 1996, Kai Tak handled 29.5 million passengers, plus 1.56 million tonnes of freight..." https://en.wikipedia.org/wiki/Kai_Tak_Airport#Overcrowding_in_the_1980s_and_1990s
https://en.wikipedia.org/wiki/Kai_Tak_Tunnel
https://jfdatalinks.blogspot.com/search?q=San+Diego+International+Airport
