Johnson's Flying Service
Johnson's Flying Service of Missoula, Montana, maintained Forest Service contracts well into the 1960's and used both Ford Tri Motors and Travel Airs on floats or wheels to haul smoke jumpers and freight to remote regions. Although better known for its bush flying and forays into the regional airliner business, Johnson Flying Service also operated a small fleet of P-2H Neptunes in the air tanker role.

After being withdrawn from RCAF service, several aircraft went on to serve as air tankers and then later sold to US operators. 135617 briefly wore canadian registry CF-MQX. It and 3 additional aircraft would be sold first to Johnson Flying Service, then to Black Hills Aviation and finally Neptune Inc.