PROGRAM 437 Page 2 JOHNSTON ATOLL 81008 and perimeter fence (F&S No. 81001). The launch and other major facilities within the secured area are served by an asphalt paved road network (F&S No. 81022). Launch control is accomplished from the Launch Operations Building 790. Other structures within the secured area serving the launch facilities include the S&I Building 787 (F&S No. 81002), missile storage bunkers, 779 through 785 (F&S No. 81007), Payload Assembly Building 795 (F&S No. 81020) and Teltrac and Command antennas (F&S No. 81004). MisSile guidance is accomplished from either the Ground Guidance facilities at Building 100 (F&S No. 81012) or Building 990 (F&S No. 81015). FY 1969 FIREX MODIFICATIONS - Completed DESCRIPTION The Launcher Firex System has been rehabilitated and modified. Modifications include installation of a new 14-inch diameter firex line and a new 4-inch diameter freshwater line. Four new 18,700 gallon polyester tanks and associated piping were also provided (completed in 1968). DRAWINGS: 91-6200-M3 and M4 JS 91-6100-M107 thru M112 FY 1969 AND FY 1970 PAYLOAD SERVICE TOWER ENGINEERING Drawings have been issued for approval. Drawings: 91-086-Al thru A3 91-086-M1 thru M6 91-086-C5 and C6 91-086-E3 thru E7 91-086-S9 thru S18 PROCUREMENT To be accomplished. CONSTRUCTION. An aluminum tower with service platforms will be con- structed to provide working access at various levels on the elevated Thor missile. The tower will be 119-feet high for use with the short tank Thor. A 9-ft. long section of tower will be added for use with the long tank Thor. The tower is provided with a cantilevered trolley beam and 10 ton crane block to facilitate mating the High Altitude Test Vehicle with the elevated Thor. The tower will be capable of being used on both Launch Pad No. l and No. 2. The tower will be trucked to either launch pad and erected utilizing the Thor erection mechanism. within the tower shaft. An elevator is provided *All costs indicated are for modifications after 1964 only. 81-9 L VOLI April 1969