Real World C-130 Upgrade.
The US Air Force has picked the Coulson Aviation USA retardant aerial delivery systems (RADS-XXL) to outfit seven former Coast Guard Lockheed Martin HC-130H search-and-rescue turboprops as firefighting assets for the Forest Service.
The 15,000l (4,000gal) system that can jettison 6,000l (1,600gal) of retardant per second was chosen over other types like the modular airborne firefighting system (MAFFS), which is already used by Air National Guard and Reserve C-130s in support of the wildfire mission.
US Forest Service's planned C-130H paint scheme
Full story can be found
here.