Under ordinary circumstances, the U.S. Army relies on high-speed digital communications. But sometimes that is not an option, and soldiers must revert to more primitive methods.
“When electrical and/or digital means of communication are inadequate, or not available,” a new Army publication explains, messages may be transmitted “through the use of hand-and-arm signals, flags, pyrotechnics, and other visual aids.” Many of those alternate communication methods are described in Visual Signals, U.S. Army Training Circular TC 3-21.60, March 2017.
So, for example, “To signal ‘chemical, biological, radiological and nuclear attack,’ extend the arms and fists. Bend the arms to the shoulders. Repeat. (See figure 1-16.)”
Of course, hand and arm signals have limitations. For one thing, they may be misunderstood.
“Visual signals are generally contextual in nature. For example, the hand-and-arm signal for ‘take cover’ and ‘slow down’ are similar in their perspective movements, however the situation in which each is given is completely different.”
Also, “The range and reliability of visual communications are significantly reduced during periods of poor visibility and when terrain restricts observation.”
Finally, visual or gestural communications “are vulnerable to enemy interception and may be used for deception purposes,” the new Army publication said.
Rather than get caught up in the buzzword flavor of the month, the policymaking ecosystem should study what’s actually working.
The U.S. does not lack ideas for improving its transportation system. What it needs is a research ecosystem capable of turning those ideas into deployed solutions.
The Federation of American Scientists (FAS) is excited to announce that Kumar Garg and Matt Lira are joining the organization’s Board of Directors.
A cohesive strategy to achieve two goals: (1) deploy the clean energy and grid upgrades necessary to make energy affordable and combat climate change and (2) create governments that tangibly improve peoples’ lives.