Hey Jim, I've been monitering in the mornings and partly in the afternoons and heard the Id 999 which does sounds like school buses too, some times they say -north terminal- also mention some students names..BTW this is on the Golden site...The ones i hav'ent seen yet are 1517,1954 and 3075...And lastly about noon Id 34903 was being tested, which i believe is Denver Police Mutal aid (from scanlist)....later Tom