Simulated mines blink red and emit an acoustic signal to communicate a detonation. Researchers were studying the psychological factors determining a person’s ability to cross a minefield.

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Photo credit: © Barney Low / Alamy / Afripics
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Keywords: air, america, archive, ardec, armed, army, defence, force, forces, military, navy, rdecom, reportage, service, serviceman, servicemen, soldier, states, united, usa