Cuban Missile Crisis and that while the Kennedy Administration had agreed not to invade Cuba, they were only in process of determining Khrushchev's offer to withdraw from Turkey. When former US President Harry Truman called President Kennedy the day of Khrushchev's offer, the President informed him that his Administration had rejected the Soviet leader's offer to withdraw missiles from Turkey and was planning on using the Soviet setback in Cuba to escalate tensions in Berlin. The US continued the blockade; in the following days, aerial reconnaissance proved that the Soviets were making progress in removing the missile systems. The 42 missiles and their
US signals intelligence in the Cold War when compromised, by Ronald Pelton, in 1981. SIGINT had much operational impact during this period, with the Cuban Missile Crisis, steady ramping up of warfare in Southeast Asia, and US domestic surveillance. Aircraft, UAV, ship, and ground SIGINT all were in use, and satellite technology left the experimental stage. The Ryan Q-2A evolved into the Q-2C Firebee target drone of 1960 which remains in active service. In 1961, the Air Force requested a reconnaissance version of the Firebee then designated the BQM-34A which resulted in the Ryan Model 147 (later to be designated AQM-34 by USAF). This RPV (Remotely Piloted