Watch St. Elmo’s Fire appear on an E-4B doomsday plane’s nose during aerial refueling

Static discharges on an E-4B refueling from a KC-135.

The following video shows an interesting phenomenon. An E-4B Nightwatch National Airborne Command Post  (NAOC) approaches a KC-135 in cloudy weather and the differential static equalization between the two aircraft creates static discharges that are clearly visible.

Once the boom touches the receptacle of the E-4 the charges are equalized and the static stops. “What you really cannot see in this video is the semi-transparent shaft of purplish/pink electrons moving between the two aircraft, this is commonly known as St Elmo’s Fire,” says the uploader of the video on YT.

St. Elmo’s fire is a weather-induced phenomenon in which luminous plasma is created by a corona discharge from a sharp or pointed object in a strong electric field in the atmosphere: it appears every now and then on the cockpits of aircraft flying through the clouds or not far from thunderstorms.

This phenomenon is not dangerous to the aircraft: the plane is shielded by Faraday Cage, that blocks out external static electrical fields and charges redistribute on the conducting material without affecting the cage’s interior.

The E-4B, designed to carry the U.S. SecDef as well as other U.S. top officials, is specifically designed to keep American decision makers alive in case of nuclear wars, zombie invasions or alien attacks.  Therefore, it has to be able to fly through any EMP (electromagnetic pulse) with unharmed systems. That’s why this highly modified Boeing 747 does not feature modern glass cockpit: old-fashioned, analogue-style avionics are more resistant to EMPs.

About David Cenciotti 3709 Articles
David Cenciotti is a freelance journalist based in Rome, Italy. He is the Founder and Editor of “The Aviationist”, one of the world’s most famous and read military aviation blogs. Since 1996, he has written for major worldwide magazines, including Air Forces Monthly, Combat Aircraft, and many others, covering aviation, defense, war, industry, intelligence, crime and cyberwar. He has reported from the U.S., Europe, Australia and Syria, and flown several combat planes with different air forces. He is a former 2nd Lt. of the Italian Air Force, a private pilot and a graduate in Computer Engineering. He has written four books.