1975 LaGuardia Airport bombing
[1] The attack occurred during a four-year period of heightened terrorism within the United States: 1975 was especially volatile, with bombings in New York City and Washington, D.C., and two assassination attempts on President Gerald Ford.[8] He cut short his vacation in Vail, Colorado, and ordered FAA head John McLucas to look into ways of tightening airport security.He immediately went to the airport and summoned by radio all available detectives from the five boroughs, launching at the time the largest criminal investigation in the NYPD's history.In addition, an anonymous person called the news agency UPI claiming to be from the Palestine Liberation Organization (PLO) and responsibility for the attack.However, the PLO spokesman at the United Nations denied all responsibility and condemned "the dastardly attack against the innocent people at LaGuardia".The PLO believed the call linking it to the bombing was an attempt to sabotage talks at the UN scheduled for January 12 regarding the plight of Palestinians.[citation needed] Since there was no credible claim of responsibility, investigators concluded the bomb had gone off at the wrong time and that the intent had been for it to detonate either 12 hours earlier or later, when the area would have been nearly clear of people.[5] John Schindler, writing for The Observer, suggested the Yugoslav State Security Administration (UDBA or UDSA) orchestrated the bombing as a false flag attack as part of an ongoing effort to discredit Croatian dissidents.