This is the annual multiairport movement by general aviation of donated food across Washington state to costal and Puget Sound food banks working out how to best use general aviation when the big earthquake takes out the roads across the Cascade spine and the west side of the state.
These are articles and videos from past Thunder Run exercises:
2024: https://www.youtube.com/watch?v=FtN1ayJhLVo&t=37s
2023: https://www.youtube.com/watch?v=14o6zG9ylAk
Thunder Run 