Earlier entry describes DPS patrol car getting Northbound traffic where speed drops from 75 to 65. They also get southbound in same general area as motorists start speeding up leaving Flagstaff. They were also using an AIRCRAFT a few weeks ago in the same area. I know because I am a pilot and was advised to watch for low flying aircraft that was working I-17. He did indeed land shortly after sundown (C210, 2 DPS officers) just after I was parking my plane. I have a second home in Flagstaff and commute between Flag and Phoenix both by car or private plane weekly. This is one of the hottest spots for easy money near Flag. Watch yourself here! (usually ok if 10 or less over the limit. When they stop you they want to make sure it sticks.) Adult son recv’d ticket for 95…expensive..,didn’t listen to warnings.