Gregory Klees

Gregory Klees was born in Kenosha, Wisconsin. He graduated from Mary D. Bradford High School in 1971, and graduated from Lawrence University of Wisconsin in 1975. After college, he began his working career at the FBI Laboratory in 1976. He left the FBI Laboratory in 1993 and went to work at the ATF Laboratory as a forensic Firearm and Tool Mark Examiner. He has worked many high profile cases in his career including the Ruby Ridge shootout, the Branch Davidian compound crime scene, the I-270 serial shootings around Columbus, Ohio, and many of the scenes in the Washington DC Sniper case.