__ —g-E-6-R-E fusing and firing systems are all sequentially proven in this stage, in part through laboratory tests and in part in Plying models. Due to the ability of the laboratories to create and test under environmental conditions more extreme. than those of controlled flight, the number of flight tests ean be held to a minimum, “firing gave nomeasurable nuclear reaction, — “Thiswas, of course, a test to determine the safety of the design to with- stand fire or concussion without producing nuclear yield. Laboratory tests of the assembled components are underway and a flight test program of the complete system using simulated HE and nuclear components is scheduled for the near future, “ mess ASyou can appreciate, it is essentia hat we know as accurately és possible the yield of the stockpile model. The ettack'ng aircraft must be able to approach the target as closc.ty 4s possible if accuracy is to be insured. At the same time, if the yield is greater than expected, it could destroy cur. Attacker. as Yell.as.the Wt, 2 target aircraft. I hope that the above infcrmation may be sufficient for your needs. Should it not, please call us for any additional information you may require. Sincerely yours, /s/ SYOLASSIFIED “5. R@988, doo. 3.8 the?G72 GOG «1 patbatsIRLLE. K, E. Fields General Manager

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