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air control of task force afroraft and other aircraft entering the Ent~
wetok Air Control Area for other than shot or rehearsal purposes was to
be performed through Eniwetok Approach Control.
Approach control for the
Eniwetok Air Control Area was planned as a functional part of the Air
Operations Center, the Approach Control activities to be integrated with
those of the Air Operations Center but to operate continuously regardless
of the hours of operation of the Air Operation Center,
Inasmich as all aircraft operations in the Eniwetok Proving Cround
would be over water and would require strict, accurate control, the installation of Mark 10 or Mark 25 transponders in all aircraft except hdlicopters and liaison aircraft and the installation of UHF radio equipment
in all aircraft entering into or operating in the control area were required,
Air control facilities and procedures were established to provide
dual air control capability for devices tirea at either Eniwetok or Bikini
Atolls,
Capability also was planned to provide required control should
more than one shot be fired on any single day.
The dual shot capability
had been tested during Operation REDWING in 1956 and was found to be ade~
quate,
Primary atr-cround communications for HARDTACK was to be UHF radio,
However, VHF radio was to be available for use by ipproach Control, the
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control tower, direction finding facilities, and Grouna Vontrolled Approach.