Mr Hudson spent 20 years serving the United States Marine Corp in a number of positions, including as a C-130 pilot.
Mr DeMorgan served in the United States Air Force with 18 years as a flight engineer on the C-130.
He had more than 4000 hours as a flight engineer with nearly 2000 hours in a combat environment. In a statement, Coulson Aviation, which chartered the aircraft, said he was passionate about flying and his children.
He is survived by his wife and two children.
Mr McBeth lived in Great Falls, Montana, and is survived by his wife. He was an experienced pilot who had spent years fighting fires, both in the military and with Coulson Aviation.
Mr McBeth served with the Wyoming Air National Guard and was still a member of the Montana Air National Guard.
A statement by Montana Air National Guard Colonel Buel Dickson said the guard had lost a “valued Airmen and friend” who would be “dearly missed”.
“It is never an easy thing to manage, the loss of a brother in arms affects us all,” he said. “Our thoughts and prayers go out to his family as they navigate this painful and tragic situation.”
Coulson Aviation said in a statement its other crews would be returning to work soon.
“At Coulson Aviation, we have the incredible job of fighting fires around the world and we take pride in this responsibility. Right now, our hearts are with the crew’s family and friends and our Coulson family suffering in the loss of these three remarkable and well-respected crew members.
“We must continue to work with emergency services to protect local communities. The aviation industry and emergency service sector is a small community both in Australia and around the world.
“We are incredibly moved by the outpouring and support from those in Australia and around the world. Thank you for recognizing the work that our crews do and for expressing your condolences and grief for the families of our fallen heroes.”
California Governor Gavin Newsom said he and his wife were “heartbroken” at the news.
Laura is a journalist for The Sydney Morning Herald.