2)
Adherence“to preseribed procedure’ is mandatory,.
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‘authorized departures from or variations in prescribed 4 eee
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ity and speed, tend to nullify security precautions, :.
andare prohibited, If the procedure prescribed here“St
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3) The following basic rules ‘are ‘essential’ to:‘trenemission- s
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, security and shall be strictly: enforced on all radion.6
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