Recently Mike Cole wrote in the comment section of Susanville Helipad:

“1972 was the first year for Bieber Helitack. I was a firefighter on the crew. The guy in white shirt was our pilot, fresh out of Vietnam Nam, his first name was John ( can’t remember his last name). Next up is FC Jack Waters, FAE Jack Perdue, and FGT (FC) Dave McNamara. We were issued nomex jumpsuits, before firefighters had nomex. I retired from CDF in 2006”

Thank you Mike, Tim.