I just did a 3 day, SFO - RNO - SFO - EUG - DEN -SAF - EUG - SFO. I was slightly astonished to see that at EUG and SAF, the only airplanes at the airport were OO (wearing UA, DL, and AA colors). At SFO, and I kid you not, of 5 airplanes in the departure lineup, 4 were OO. Finally at DEN, we were at the head of a 6-plane lineup for the 25 departure. Four were OO 175s. One was a UA A319. And then there we were in an OO CRJ-700.

It was kinda spooky, I gotta say.