 The one thing that was not found was COSVN . On 1 May a tape of Nixon 's announcement of the incursion was played for General Abrams , " who must have <unk> " when he heard the president state that the capture of the headquarters was one of the major objectives of the operation . MACV intelligence knew that the mobile and <unk> dispersed headquarters would be difficult to locate . In response to a White House query before the fact , MACV had replied that " major COSVN elements are dispersed over approximately 110 square kilometers of jungle " and that " the feasibility of capturing major elements appears remote " . 
