http://www.msn.com/en-us/news/us/crashed-north-dakota-air-ambulance-didnt-send-distress-call/ar-BBQiQSp?ocid=ientp
https://bismarcktribune.com/news/local/local-investigation-into-air-ambulance-crash-complete-questions-remain-as/article_4930de03-41e4-53ce-a400-6b41052fc33f.html#tracking-source=home-top-story-1