SkyWest has a Phx base, it's somewhat senior and I'm unsure of its future maybe someone else can chime in. We did get more CRJ flying for American out of OrD and some of lax CRJ flying moved to phx as far as I know. Other than that SkyWest has a ton of bases pdx, sea, slc, lax, sfo , den, cos, ord, msp etc etc