>> breaking in on arizona 16. >> reporter: listen closely to the audio from an unidentified fire fighter standing at a safe distance whose helmet camera caught the crew's last radio transmissions. >> we've got fire right over here now. >> bravo 33, operation, you copying that air to ground? >> air to ground16, granite mountain, arabia attack, how do you read? >> is granite mountain in a safe zone? >> reporter: they weren't in a safe zone. they fell down a ridge and found themselves cut off by fire. in the audio, you hear what appears to be miscommunication between the hot shots and dispatch. . >> reporter: the hot shot team continues to call for air support. an air tanker to drop fire retardant on their location but it never comes together. their only bet now is to deploy