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Trip flares, attached to low pickets, can be placed around a position or in an ambush site, and may either be fired when an enemy touches a tripwire or initiated by the defender or ambusher.
Why is the administration proposing to abandon the long-standing tripwire function of U.S. forces in the country?
This provides an automatic detection, or tripwire , feature within the system.
the placing of tripwire forces on disputed borders
The 19 camps between the capital and the border house about 15,000 U.S. tripwire troops.
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