Following the Gulf of Tonkin Incident, Lyndon Johnson, who was up for re-election that year, launched retaliatory strikes and went on national television on August 4, 1964. Although the USS Maddox (DD-731) had been involved in providing intelligence support for South Vietnamese attacks at Hon Me and Hon Ngu, Johnson's Secretary of Defense, Robert McNamara, went before Congress and denied that the United States Navy was supporting South Vietnamese military operations. He thus characterized the attack as “unprovoked.” He also claimed before Congress that there was “unequivocal proof” of an “unprovoked” second attack against the Maddox.