Back in a flash... A nasa ER-2 takes off from macdillafb , Fla., to conduct terrestrial gamma-ray flash, or TGF, research in the Gulf of Mexico July 13, 2023. The Airborne Lightning Observatory for TGFs campaign is a collaboration between NASA and the University of Bergen, Norway, to study the advanced science of high-energy radiation emissions, known as dark lightning, from thunderstorms. 📸 Airman 1st Class Zachary Foster #NASA #USAF #emissions #darklightning #collaboration #observations #research #military