In establishment shots the supposed headquarters building of NAS Fallon is in real life the actual HQ of NAS Alameda.
Lt. Schiparelli, who is from the Bronx, asks Harm if he knows why New York City is called "The Big Apple", he replies he does not. NYC was first referred to as "The Big Apple" around 1909 by author Edward Martin who likened America's largest city as the largest apple on a fruit tree whose branches represent the cities of America. The term started to gain further use in the 1920's due to NYC being home to a number of racing courses and betting venues, and those courses being the best in the nation. "Big Apple" was a term used to describe the top award in a race, and the awards from winning a NYC race were among the largest in the nation leading to the city to be referred to as "The Big Apple" by horse and dog racers, as well as gamblers the frequented the OTB (Off Track Betting) venues. However the term was not officially adopted by the city as a nickname until 1971, it was used as the slogan for a series of television commercials and magazine advertisements produced by the city to attract tourism. The ads centered around the theme of a view from atop of one of the city's famous skyscrapers like the World Trade Center, Empire State Building, Park Avenue condos and the Chrysler Building and would show an apple sitting on a ledge with a panoramic view of the city in the background captioned "Come and [either] See/Visit/Explore the Big Apple".