I live about 30mi SE of Travis AFB in California. For about 5 days in a row, there was 2 or 3 flights of fighter jets coming from the direction of Travis, and bookin' it towards the SE Very high, very fast, and VERY loud. My wife, son, and son-in-law all saw at least one flight, But me, the airplane guy, never did see one. SON-OF-A .......!
Travis is a big logistics base and has no fighter aircraft based there. There is, however, an Air National Guard base in Fresno which is in the general direction they were headed. They fly F15's