After the 1964 Gulf of Tonkin Incident , and the decision being made to escalate United States involvement in the Vietnam War , MATS performed a critical role in the air transport of personnel and equipment to the war zone .
ADP DET NUM PROPN ADP PROPN PROPN , CCONJ DET NOUN AUX VERB PART VERB PROPN PROPN NOUN ADP DET PROPN PROPN , PROPN VERB DET ADJ NOUN ADP DET NOUN NOUN ADP NOUN CCONJ NOUN ADP DET NOUN NOUN .