We have a couple of notable crash sites in the Central Oregon desert, Christmas Valley area.
P-38 Lightning, went down in 1945
A-6 Intruder, went down in 1973
There's a B-24 in the Steens too, I think.
One of these days I'm gonna take a few days and camp out in Christmas Valley and hike out to the P-38 and A-6. From what I've read, the debris field from the Intruder is quite a large area and takes a bit more looking.
Not much in the way of cactuses though.