As documented by NASA space shuttle film footage, and detailed in this report, self-illuminating, pulsating, plasma-like UAPs (“plasmoids”), have multiple shapes and sizes, are attracted to electromagnetic activity, and travel at different velocities from different directions, making 90 to 180 degree turns, as well as colliding, intersecting and piercing other plasma; and have been filmed by U.S. Navy personnel and a U.S. Customs and Border Protection DHC-8 flying above and diving/sinking beneath the ocean; and by NASA following, circling, and hovering near the space shuttles, satellites, and the MIR International Space Station and congregating above and descending into thunderstorms and the lower atmosphere which is the air corridor favored by commercial and military aircraft; and this may account for reports of UAPs following, harassing, chasing, and “toying with” aircraft. Plasmas also have explosive properties, negatively affect electronics and mental activity (possibly inducing hallucinations of “alien abductions”), and pass through glass, plastic, metal, and enter the cockpits of airplanes and have been observed by astronauts inside spacecraft, the MIR and ISS. It is hypothesized that given their propensity to collide, plasmas may be responsible for at least some unexplained, inexplicable aircraft disasters. Thunder-lightning-storms are the main drivers of Earth’s GEC and direct positive currents into the ionosphere which attract plasmas. The troposphere also has a positive charge, and the ocean surface under white water and turbulent conditions develops a positive charge; and we hypothesize that this accounts for sightings of UAP in the lower atmosphere and soaring above and diving into the oceans; including, as reported here, shape-shifting UAP replicons that split into or generate additional shape- shifting UAPs as filmed by NASA and U.S. Customs. Plasmoids appear to purposefully interact and engage in complex behaviors, but it is unknown if they are sentient and represent a fourth domain of life. Although plasmas in the lower atmosphere may be responsible for UAP sightings over the centuries, including those that appear to “battle” over cities or follow and harass military ships and planes, plasmoids cannot account for all UAP which may include extraterrestrial spacecraft from other worlds.