Jeff,
120 cams... SWEET! Many markets the size of Cincy do not have that technology in place. ALL major cities should be so lucky.
The problem with planes/helicopters is the cost. They're only up 6 hours a day during rush hours, and that's if the weather permits... and no mechanical problems. If you take a city like Indy and your plane is over the dog-leg, it takes too long to fly down to the southside to check on a reported incident. Cams on the major roadways make much more sense.
If you don't have that technology yet, we're back to my original posting. It's a crap shoot. You do the best you can with the tools your employer gives you.
W