Approved for Release: 2013/06/25
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Secret NOFORN
Chapter 5
239
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The loss of yet another U-2 and its pilot made Nationalist Chinese officials reluctant to resume overflights of the mainland. They insisted that their U-2 pilots be given permission to turn on the System-XIII false-angle device during the entire time they were over hostile territory, not just after they had been alerted by the System-XII radar-detection device. The Defense Department acceded to these demands in order to keep the TACKLE flights going. In addition, the Project TACKLE U-2s began receiving even more advanced ECM equipment.⁶⁰
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⁵⁹ Mission folders C284C (22 November 1964), C304C (25 November 1964), C344C (19 December 1964), and C015C (8 January 1965), OSA records, job 66-B-664, box 8, job 69-B-404, box 2, and job 66-B-597, box 1; *USIB History*, vol. 6, p. 758 (TS Codeword).
⁶⁰ Ibid., chap. 17, pp. 59-61 (TS Codeword).
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Secret
Approved for Release: 2013/06/25