Acknowledgments
The authors thank members of the NASA Marshall lightning group – including Dan Cecil, Patrick Gatlin, Bill Koshak, Doug Mach, Mason Quick, and Chris Schultz – for helpful discussions regarding this study’s results. Rich Blakeslee (NASA Emeritus) served as the original Principal Investigator for ISS LIS. This research and the ISS LIS mission itself are funded by NASA’s Earth from ISS program. In particular, the support of ISS LIS by key NASA Headquarters personnel – including Jamie Wicks, Warren Case, Paul Brandinger, Will McCarty, Aaron Piña, Tsengdar Lee, and the late Gail Skofronick-Jackson – is gratefully acknowledged. The authors declare no conflicts of interest.