"The craft circuits override lower frequency, lower voltage electric circuits within and near their electromagnetic fields. One source briefly mentioned a 1941 incident, where a shortwave radio was used to override automobile ignition systems, up to 3 miles away.
When the shortwave radio was turned off, the cars could work again. How many UFO encounters have been reported in which automobile ignition systems have suddenly stopped?
I figure that things would not be at all pleasant for drivers of modern cars with computer controlled engine and ignition systems. Computer circuitry is sensitive to small changes in voltage and a temporary wrong-way voltage surge may wipe the computer memory out.
It could mean that a number of drivers would suddenly be stranded with their cars not working should such a craft fly low over a busy highway. Only diesel engines, already warmed up, and Stanley Steamer type steam engine cares are able to continue working in a strong electromagnetic field.
In May, 1988, it was reported that the U.S. Army had lost 5 Blackhawk helicopters and 22 crewmen in crashes caused by ordinary commercial radio broadcasting overriding the computer control circuits of those helicopters"
https://nexusnewsfeed.com/article/science-futures/nikola-tesla-s-flying-saucer-electromagnetic-field-lift-experiments/
"The crew claim that when in proximity to the UFO, especially when directly above it, most of the electric devices onboard were instantly turned off."
"When all the crew was back onboard and they had reached a considerable distance from the site, the electronic equipment suddenly started working again."
https://ufoholic.com/sunken-ufo-creates-electrical-anomaly-disables-all-nearby-devices/
Car Engines Stalled by UFOs
https://www.theufochronicles.com/2014/05/car-engines-stalled-by-ufos-pt-2.html?m=1
"Robert Jamison, a retired USAF nuclear missile targeting officer, told of several occasions having to go out and "re-start" missiles that had been deactivated, after UFOs were sighted nearby.
Similar sightings at nuclear sites in the former Soviet Union and in Britain were related."
https://www.cbsnews.com/news/ex-air-force-personnel-ufos-deactivated-nukes/
"WHEN a giant UFO shut down nuclear weapons under US Air Force Captain Robert Salas' control, he believes they were delivering a message to humanity."
https://www.thesun.co.uk/news/worldnews/16430919/witnessed-giant-ufo-shut-down-10-nukes-secret-base/
"At an unusual press conference recently held in Washington, D.C., a UFO author and a half-dozen or so former U.S. military airmen asserted that "The U.S. Air Force is lying about the national security implications of unidentified aerial objects at nuclear bases and we can prove it." They claim that since 1948, extraterrestrials in spaceships have not only been visiting Earth but hovering over British and American nuclear missile sites and temporarily deactivating the weapons."
https://www.livescience.com/10146-ufos-disarm-nuclear-weapons.html