In this video a DC-10 Very Large Air Tanker drops fire retardant on the Pole Creek Fire that eventually burned 120,000 acres south of Provo, Utah. The video was shot September 20, 2018 from a mapping aircraft operated by Owyhee Air Research, Inc.
The video can also be seen at YouTube.
According to the long/lat information on the screen, this is the location where it was filmed.
A Facilitated Learning Analysis was conducted about the management of the Pole Creek Fire, since initially it was not aggressively suppressed, but it was hoped that the fire would accomplish some resource management objectives.