TM 55-1680-350-10end (flare end) contains a pyrotechnic composition for illumination during nighttimeuse. The illumination end of the signal can be identified by a series of embossedprojections located 1/4 inch below the end cap. The average burning time of theillumination signal is 18 seconds and when used at night as recommended, it can beseen at a distance of two to three miles from an altitude of 3000 feet. To activate thesmoke and illumination signal, proceed as follows:WARNINGDo not attempt to ignite both ends of a signal at the same time.a. Remove paper or plastic cap from either the smoke or illumination end of thesignal, as applicable.b. Grasp the signal firmly with one hand and hold the signal close to the chestin a horizontal position with each end of the signal pointed away from the body.c. Insert the index finger of your tree hand into the pull ring which shall breakthe soldered end of the cap free. If the soldered cap does not release, bring the pullring down over the rim of the can and press down with the heel of your hand, usingthe ring as a lever to break the seal.2-15
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