[buildsjets]

The KC-10 went out of service last year. None are operating.

[loeg]

Yeah, but DC-10 based tankers for wildfire fighting were still flying until the recent grounding: https://en.wikipedia.org/wiki/DC-10_Air_Tanker

(Blancolirio points out that the DC-10 tanker is what they modernized to relatively recently -- before that they were flying even more dangerous WW2 airframes for firefighting.)

[mandevil]

Damnit, I knew that! Just forgot it in the moment.