D.C. Sniper expert weighs in on Arizona incidents

Arizona State Troopers continue to search for the shooter, or shooters responsible for a string of incidents on Valley freeways. Officials with DPS have been tight-lipped about the investigation, including whether they have a profile of the shooter.

The situation reminds some of the snipers who terrorized Washington D.C. back in the fall of 2002. Mark Spicer, an expert witness in the prosecution of that case actually lives in the valley, and he weighs in on the valleys situation. Spicer served in the British Army for 25 years as a sniper, including time as an instructor for the UK Sniper School.

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Spicer believes there are two shooters and at least one copycat. He doesn't think the person is a professional, but there is a possibility that the person is intentionally missing.

"It can be a multitude of reasons, one of which the person wants to be famous, but doesn't want to kill people, so he could be missing on purpose just to scare people. It may be that the person is an amateur, and they don't understand the correlation between the moving bullet and the ballistics and the moving vehicle. Or it could possibly be your worst case scenario, somebody who is making the police look stupid and is going to step his game up later," said Mark Spicer.

"What a sniper can do is get inside somebody's head and terrorize an entire community, even a city as big as Phoenix and disrupt almost the entire economics of the city by just making people late for work, making people not go to work, parents keeping their kids from school because they don't want to take them through that risk. It's a very easy weapon to use and a very difficult weapon to stop," said Spicer.

Spicer says the key is getting inside that sniper's head.

If you have any information on the freeway shootings in the Valley, or if you believe you are a victim you're asked to call DPS at 602-644-5805.

A $20,000 reward is being offered for information leading to an arrest.