Secret NOFORN
Chapter 3
Operation SOFT TOUCH (4-27 August 1957) proved to be the high water mark of U-2 operations against the Soviet Union. Detachment B staged one more overflight on 10 September 1957, when a U-2 piloted by William Hall flew from Adana to photograph the Kapustin Yar Missile Test Range for the first time since the RAF's overflight in 1953, obtaining photographs of a large medium-range ballistic missile (MRBM) on the launchpad. Six days later Detachment C conducted its successful overflight of the ICBM impact site at Klyuchi, and October saw the final two overflights of Detachment A. After these missions, penetration overflights became a rarity. There would be only six more during the next 32 months: one, in 1958; two, in 1959; and three, in 1960 (one of which was unsuccessful). During this period, President Eisenhower did authorize a number of flights along Soviet border areas that occasionally penetrated short distances inside the border, but the Chief Executive had become extremely wary of authorizing "deep penetration" overflights, which invariably brought protests from Moscow.
The border flights took place under tight controls. Beginning in the fall of 1957, all messages from Washington to Adana giving coordinates for flights along the Soviet border contained the statement: "This is not a penetration overflight" and warned about flying too close to Soviet borders. The Soviets even attempted to shoot down