Day Three: Grenier has background in blood stains

Directed to the 110 block of Neilson Street, Grenier participated ina crime scene search of the neighborhood and houses.

Officer Grenier says that they study how blood stains are created, and identify particualr stains and use that information to draw conclusions as to how they were caused. Grenier says that at State Police Academy in Albany, he took a lab workshop to create blood stains, watch how they dry, and how they were caused.

Grenier says he's had to put this knowledge to use at suicide scenes before in order to recreate what has happened, and has been called as an expert witness in other cases in Oneida, Jefferson, and Onondoga Counties.

Specific blood stains are discussed, such as "cast off" stains, when hit with a swung object, "direct-contact stains," "swipe make stains," "impression stains," "impact stains," etc.

In February 2008, Grenier was asked to review the blood stains in the case of Officer Lindsey, looking at autopsy report, DNA report, and photographs of the 1995 red Dodge Neon.

Grenier is shown photos of the red Neon involved in the investigation. Some were taken at forensics center in Albany, some at UPD, Grenier says.