Most definitely RSH.
I had seen a jillion of these in Florida, but nowhere else until I visited OR. On an otherwise-dull riparian stroll, a hawk materialised, perched above my head, in perfect RSH habitat, looking red-shouldered, bar-tailed, checker-board-winged...but weirdly rufous.
A quick guide check, of course, confirmed that out west (where they are much less common), the RSH is indeed strikingly rufous, unlike the FL standard, which is strikingly pale-fronted.
Anyway, yes, 100% RSH.