UK radio amateur John Hey G3TDZ (SK) designed the special low frequency radio equipment, the Heyphone, used in the recent cave rescue in Thailand
John Hey passed away in 2016 so he didn't get to see his work used here. But ham radio should get some of the credit.
Phil Karn KA9Q (Facebook) - https://facebook.com/phil.karn.98/posts/10155276627256486
Phil Karn KA9Q (Twitter) - https://twitter.com/ka9q
John Hey G3TDZ Heyphone Cave Rescue Communication System - http://bcra.org.uk/creg/heyphone/