Timeline of United States military operations communist attack on a U.S. installation in central Vietnam, the United States escalated its participation in the war to a peak of 543,000 military personnel by April 1969. 1961: Cuba: The Bay of Pigs Invasion, known in Hispanic America as Invasión de Bahía de Cochinos (or Invasión de Playa Girón or Batalla de Girón), was an unsuccessful military invasion of Cuba undertaken by the CIA-sponsored paramilitary group Brigade 2506 on April 17, 1961. 1962: Thailand: The Third Marine Expeditionary Unit landed on May 17, 1962 to support that country during the threat of Communist pressure from outside; by July 30,
1996 shootdown of Brothers to the Rescue aircraft had not been utilized, and that this conflicts with the ICAO principle that interception of civil aircraft should be undertaken only as a last resort. It is also claimed the Cuban Air Force did not make any attempt to direct the aircraft beyond the boundaries of national airspace, guide them away from a prohibited, restricted or danger area or instruct them to effect a landing. Following the incident, the United Nations Security Council passed Security Council Resolution 1067 (1996), a U.S.-sponsored resolution condemning Cuba. Dissenting members believed that the resolution was singling out Cuba for condemnation, and instead should have