and “on the spot!’checks of actual communications conditions. A continuous check of outgoing and incoming Cl?traffic was made.
checks of W?
Spot
and voice circuits were effected. Violations of communi-
cation procedure, improper use of plain language, overclassification
and overprecedence, all of which tended to reduce communications
security, were called to the attention of the commands concerned as
quickly as possible. Any other irregular or unusual communications
practices which might possibly effect communications security were
noted and corrected whenever possible.
3. Arrangements were made by J-2 with the Amy Security Agency
monitoring units at Oahu and Kwajalein and with the Navy monitoring
units at Oahu and Guam to assist in the monitoring of certain circuits.
Due to personnel shortage at these monitortig stations, circuits were
monitored upon request and on a spot-check basis.
4.
In-the-clear time signals, which were recognized as a calcu-
lated risk necessitated by personnel safety and scientific requirements,
were carefully prepared and checked in order to minimize the actual
time of transmission, the power used, snd the amount of revealing information contained therein. Although the frequencyon which these
time signals were broadcast was monitoredby stationsat both Guam
and Hawaii,these signalscouldnot be read by the monitoringstations.
5. Plainlanguagevoice transmissionincidentto the finalevacuisland were carefully edited and a specialcheckation of each ‘tshotll
off list was devisedto petit the transmissionof the requiredinfor66
SectionII
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