The eternal flame at the John F. Kennedy grave site in Arlington National Cemetery in Arlington County, Virginia, in the United States on May 30, 2013. The flame was completely replaced and an upgraded nozzle, flame monitoring system, re-ignition mechanism, gas control system, and fire suppression system installed during May 2013. The new flame is much more energy efficient, brighter, and better able to withstand wind and rain.
The eternal flame at the John F. Kennedy grave site in Arlington National Cemetery in Arlington County, Virginia, in the United States on May 30, 2013. The flame was completely replaced and an upgraded nozzle, flame monitoring system, re-ignition mechanism, gas control system, and fire suppression system installed during May 2013. The new flame is much more energy efficient, brighter, and better able to withstand wind and rain. Author: Tim Evanson, License: CC BY-SA 2.0 · 출처

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