© Frankie LucenaA photographer in Cabo Rojo, Puerto Rico, recorded what he described as an "amazing" lightning event during a storm in the early hours of September 17. Frankie Lucena's video shows what NASA classifies as a rare kind of "Transient Luminous Event," or TLE — a "gigantic jet." "Gigantic jets are powerful electrical discharges that erupt from the top of a thunderstorm and travel upward into the upper atmosphere," NASA says. Credit: Frankie Lucena via Storyful