3.0 Site Location 3.1 The primary purpose of this site will be to provide terminal instru- mentation coverage of re-entry vehicles (R/Vs) which would be launched from VAFB. These vehicles will approach the lagoon impact area from a north easterly direction and will pass approximately 3 miles north of Parry Island. Therefore, it is desirable that the instrumentation site have an unobstructed view as possible from 0° to 90° azimuth, The proposed site on Parry Island is located approximately 500 ft. south-east of the center of an existing 1250 ft. runway as shown in Figures 2 and 3. From this site, there is an unobstructed view from approximately 16° to 200° inazimuth. The maximum obstruction in the remaining area does not exceed Ao elevation and is probably less than 2° elevation over 90° of this area. The various instrumentation antennas which will be located on a line which has a bearing of 135°. The instrumentation complex will be designed so that terminal area coverage will be provided to the maximum capabilities of the system with minimum interference between systems.