is a device used by military
forces to secure an area and to guard against infiltration
. It consists of tripwire
around the area, linked to one or more flares
. When the tripwire is triggered, as by someone going through it, the flare is launched and begins burning. The light from the flare simultaneously warns that the perimeter may have been breached and also gives light for investigating. In defensive operations, trip flares are usually placed in predetermined kill-zones with machine guns sighted on them.
A US-based environmental website is named 'the trip flare.' The site was formed in response to the Chemetco federal criminal case.
The name was chosen because EPA inspectors almost literally stumbled upon the evidence that was to convict Chemetco, with dramatic effect.
- Example of a tripflare product