Domestic disturbances Page: 69
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their aimed fire, and causes confusion. However, it is not
advisable to attempt to disperse a disorderly assemblage with
smoke. Since smoke produces no physiological reaction, it
will restrain a mob only momentarily, and may be interpreted
as a bluff.
71. GOVERNING TACTICAL FACTORS. Although
other physical factors of weather and atmospheric conditions
influence the particular situation in varying degrees, the tac-
tics and technique of placing gas clouds are governed
primarily by wind, area occupied by the mob, and munitions
a. Wind. The direction of the wind fixes the general po-
sition of the line from which the cloud must be released in
order to drift across the occupied area. The velocity of the
wind must be considered in determining the distance between
the line of release and the mob; strong winds indicate in-
creased distance. This distance in turn affects the amount of
chemicals which mustbe released in order to place an effec-
tive concentration on the mob.
b. Area. The area occupied by the mob determines the
length of the line along which the cloud is released. This
line is usually at right angles to the direction of the wind
and should be sufficiently long to insure the creation of a
cloud which, when it reaches the mob will include consider-
ably more than the area actually occupied. The length of
the line should be roughly equal to the average width of the
target plus one-fifth of the distance from the line to the
target. (See FM 3-5.)
c. Munitions. Chemical munitions are always used in
sufficient quantities to produce an immediate and decisive
efect. Sufficient ammunition must be available for (I) prop-
erly producing the cloud, and (2) maintaining it until the
mob has been dispersed.
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United States. War Department. Domestic disturbances, book, July 30, 1945; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc96652/m1/75/: accessed May 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.