JUST IN: ATC audio captures the moments surrounding a fiery helicopter crash in Los Angeles that killed three people and left two others injured, as colleagues struggle to process the loss. Pilot George Marciniw and reporter Eliana Moreno are among those killed, according to initial reports. Now, an emotional fellow pilot says everyone is asking the same question: How did this happen? Early indications point to a possible engine failure, but investigators are still working to determine the cause.