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DENVER — The TOPS program is expanding to include more drivers who spend up to 10 shifts on metro Denver streets.

This is the program which was first called Taxis on Patrol, now it is Transportation on Patrol. In a bit of a graduation-job well done ceremony at the Counter-terrorism Education Learning Lab, police and CELL staff presented certificates to drivers who have pledged to make a difference.

“We know that having more eyes and ears on the streets, police work will get a bit of help fighting crime,” said Denver Police spokesman Sonny Jackson.

“A few years ago when the program first rolled out, we saw how one cabbie can make a difference. The driver saw a deadly hit-run crash happen on Lincoln Street and followed the suspect, giving police the information needed to affect an arrest which led to a guilty plea. We know the whole – ‘if you see something, say something’ campaign can work!”

Drivers taking the CELL course were given the basics in spotting terrorist type activities. Armed with that knowledge they will now know better what to look for when it comes to suspicious activity, which could lead to something such as the Boston Marathon bombing.

While they have the knowledge police warn these drivers to just be “good witnesses,” not vigilantes.

Observe then call police is the M.O. to this operation for sure.

If you want to see the eight ways we can all fight terrorism, log on to the to watch the video voiced by John Elway.

Police urge everyone to download the metro Denver Cimestoppers app to help fight crime on the streets.