RRU Helicopter accident

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California honors Cal Fire firefighters who died in rare helicopter collision

How firefighters and others are mourning the Riverside County helicopter...

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FTA controller ?

https://www.firehouse.com/safety-health/news/53069461/one-of-ca-choppers-in-deadly-midair-collision-lacked-warning-device

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Report: Cal Fire chopper crews may not have seen one another prior to mid-air...

Cal Fire honors Air Shasta pilot and firefighters killed in helicopter crash

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NTSB releases final report on investigation into deadly Cabazon firefighter...