By Preconcerted Signals with Coston Lights, Rockets, Bombs, Very Pistols, Small Arms, Guns, Etc. a In applying the dot-and-dash ... Each star burns from four to six seconds, and there is a slight interval between the visibility of each two stars.
|Title||:||Signal Corps training manual, pt.1: Aviation section of the Signal Corps|
|Author||:||United States. Signal Office. War Department|