On December 29, 1975, a bomb detonated near the TWA baggage reclaim terminal at LaGuardia Airport in New York City. The blast killed 11 people and seriously injured 74. The perpetrators were never officially identified or charged, although the most common consensus is that it was either anti-Yugoslavian Croats that were part of OTPOR or Communist Belgrade's own UDBA working to malign OTPOR through sabotage (a common strategy of theirs). 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.