 The death of the PAF squadron leader flying it, who was the key Pakistani member of the "Little Cloud" operation, precipitated the rapid exit from Pakistan of the RB-57Fs.The newer information is supported by the fate of 63-13287.On 14 December 1965, operating TDY from Incirlik Air Base in Turkey as "Big Rib 06", it disappeared during a mission over the Black Sea whose route passed through telemetry range for Soviet ICBMs.