sentences:  Operation Tiger Hound
  
  Operation Tiger Hound was a covert U.S. 2nd Air Division, later Seventh Air Force and U.S. Navy Task Force 77 aerial interdiction campaign conducted in southeastern Laos from 5 December 1965 till 11 November 1968, during the Vietnam War.The purpose of the operation was to interdict the flow of People's Army of Vietnam (PAVN) supplies on the Ho Chi Minh Trail (the Truong Son Strategic Supply Route to the North Vietnamese) from the Democratic Republic of Vietnam (North Vietnam), through southeastern Laos, and into the northern provinces of the Republic of Vietnam (South Vietnam).