what does "a check has failed to uncover" mean? does that group succeed or not?
Because he had not been briefed, the new President was unaware that conversations to and from 26000, 86970, 86971, and 86972 were monitored at Acrobat (Andrews Field) and automatically taped by the Signal Corps. Unfortunately, as General Clifton later explained to this writer, the device only operated when the planes were airborne. In this age of sophisticated eavesdropping, Angel dialogues were sometimes picked up by a group of zealous amateurs in Colorado, but a check has failed to uncover any such activity between 1:26 and 2:47, when Colonel Swindal took off and the turning reels at Andrews began to record voice traffic from the Presidential aircraft, together with that which was already being received from the Cabinet plane.The absence of an incontestable record and the nature of Johnsons talks mean that the page of history he wrote in 26000's bed¬room is blurred. Nevertheless it is partly readable. Although he himself informed this writer that he could not even "recall the precise sequence of calls" which he made, he was never entirely alone—"I'm sticking to you like glue," said Youngblood, trailing him inside—and in all important instances the recollections of the person to whom he talked are available.