At the U.S. majors, due to the quality of life a large w/b FO has, n/b CA's go fairly junior as a percentage of the overall seniority list. Right now it's about 70-75%. So the junior CA out of 10,000 pilots might be seniority number 7000-7500. At some airlines it's almost 80%. That's at the junior bases. At the senior base it's about 70% right now. That's about 2 yrs later than the earliest upgrade at the junior bases.