EU )54 Oa | Sa, This © 1. Problem: sanent ecne lous s2_S/__peges To determine the feasibility of establishing and maintaining a capability to support and conduct overseas high altitude nuclear veapons tests on a “when ready” basis. 2. Definition: “Testing when ready” is defined as a method of operation in conducting nuclear tests as a requirement developes, limited only - sh by the time period necessary to prepare the scientific and technical - > requirements of the experiment and/or related group of experiments. 3. Ass ions: a. Nuclear weapons development requires full-scale testing. Bb. Both the ABC and DOD have end will have devices and effects experiments that require full-scale testing. c. High altitude testing is the mst likely overseas nuclear testing method to be permitted in the event the US test moratorium d. Techniques will have been developed and perfected whereby diagnostic and effects data can be obtained from nuclear detonations in space. VY) lef) 2Beh 4. Facts Bearingon the Problem: ate: Declassified By DNA, Chief, ISTS is discontinued. a. | The U. 8. Army will use Johnston Island for the next several yQ years as a launching site for targets to be employed in tests of the SN WIKE-ZEUS anti-missile missile weapons system. \ b. Weather is not (in general) a limiting factor for high altitude muclear tests. ¢. Limited high altitude tests from ships on the high seasabe” wy presently feasible. Ds HQDP010032927 Bel a a mie A; nid a ao hone ibe OP ii eae) pa A Re H My lb ple dae

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