| Publication |
2012.
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| Summary/Abstract |
Simply put persistent lower level reconnaissance mimics the role of sentry or look out, watching an area of terrain around him for enemy movement, distinguishing friend from foe as well as the movement of local flora and fauna. The terrain might be part of a border system with the sentry acting in both deterrent as well as surveillance, a covert role son not wanting to be seen for a variety of reasons: or to provide temporary security on a route march or patrol or more a sedentary occupation securing a airbase or other key facility. While the sentry will remain in loop, their frontline role is either much reduced or eliminated, substituted for by the use of technology. While there are shortcoming with any such changes the range of technologies now used are increasingly reliable, can operate in all weathers, day or night at long distances with their range limited only by terrain and the curvature of the earth
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