You typically won't see CAP (fighter jets) on ADS-B Exchange (at least I don't) but you might see tankers supporting them. EXEC1F, actually it is Executive 1 Foxtrot is the callsign for jets carrying the family members of POTUS (FLOTUS going back to Palm Bch). A few minutes before AF1 departed 09-0015 took off, that along with 09-0016, are backup/decoys for AF1 and you'll usually see one or both traveling several minutes ahead of AF1 but landing at a different airport.