There was security at airports in 1994. What are you talking about? You couldn't just stroll up to a gate. Security has been mandatory since the 1970s.
"But in the late 1960s and early 1970s, there was a wave of hijackings, terrorist attacks and extortion attempts – the most infamous being that of the man known as D.B. Cooper, who commandeered a Boeing 727, demanded US$200,000 and, upon securing the case, dramatically parachuted from the plane, never to be found. Attacks on U.S. flights usually prompted another new security measure, whether it was the formation of the air marshal program, which placed armed federal agents on U.S. commercial aircraft; the development of a hijacker profile, aimed at identifying people deemed likely to threaten an aircraft; or the screening of all passengers.
By 1973, under the new protocols, air travelers had to pass through a metal detector and have any bags X-rayed to check for weapons or suspicious objects."