This week Christine interviews Dave regarding his unique background in the field of search and rescue. They talk logistics, barriers and visit the last known location Crater Lake, Oregon, often referred to as "the last seen place," of missing boy Sammy Boehlke. 

https://natsar.amsa.gov.au/documents/Land-Operations/LSOM_Appendix_I.pdf

https://profoundjourney.com/13-facts-lost-person-behaviour/

https://animals.howstuffworks.com/animal-facts/sar-dog6.htm