I'm looking at traveling DCA-JAX on 1/13, and my choices are a CRJ from IAD or a US 737 from DCA - I'd prefer both the DCA airport and the 737. However, I can't find this flight ( US 93) as a UA codeshare.

Two questions: 1) why can't I find this codeshare, does UA only codeshare certain US flights and/or does it change in 2006? 2) Can I still get EQM and FFM for my MP account if I book it as a US flight?