Evergreen started the 747 Supertanker program some years ago and never got it approved. Global is running into the same bureaucratic BS. BTW the Forest Service has approved a DC-10 for fire service. One helped extinguish a fire very near my home last Friday.
They are almost touch and go at Reno/Stead these days. Passed over our house outbound to Long Valley fire yesterday several times. Don’t think the DC-10 came by but some smaller 4 engine drop planes.