connection with other programs. These changes are indicated in the "Remarks" column of the test schedule in Appendix "A" and will be described in detail below. 6, The test program for Operation HARDTACK approved in AEC 952/19 contained 22 firm shots (17 firm laboratory and 5 DOD effects shots), 3 contingent shots and 1 other possible shot (the U.N, demonstration shot), The HARDTACK test schedule given in Appendix "A" of this staff paper contains 24 firm shots (19 firm laboratory and 5 DOD effects shots) and 3 contingent shots, Te | : [In addition, this letter requested that the device selected be weaponized as fully as possible for test in the HARDTACK series, In order to meet the new POLARIS warhead schedule it has been necessary to revise the test plans as follows: | 6.4fa,