| 11. | In World War I it was used in incendiaries, smoke screens and tracer bullets.
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| 12. | Cameras jerk and dive as bombs explode and tracer bullets arc the bluish-gray sky.
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| 13. | Boxes of tracer bullets were also found in Nichols'house, according to the Recovery Logs.
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| 14. | Over one million pounds of magnesium powder were produced for tracer bullets and flares.
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| 15. | Red tracer bullets flew overhead barely clearing the turret.
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| 16. | Tracer bullets could be seen racing into the sky.
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| 17. | A palm tree was set on fire and tracer bullets streaked across the nighttime sky.
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| 18. | Rockets and tracer bullets aimed at Noriega's nearby military headquarters set fire to some houses.
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| 19. | Red tracer bullets streaked through the night air.
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| 20. | An occasional burst of tracer bullets carved a red path in the air, apparently in celebration.
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