John Crews is the forensic program manager for the International Resources Group, Washington, D.C. and also serves as the deputy operations director on the contract awarded to support the International Criminal Investigations Training Assistance Program (ICITAP) of the U.S. Department of Justice.

Prior to his current work, Crews was DNA laboratory development and operations director for the International Commission on Missing Persons based in Sarajevo, Bosnia-Herzegovina. He also worked at MIT searching for genes related to adult onset diabetes, and at George Mason University helping the Federal Bureau of Investigation build a mitochondrial DNA database to support criminal investigations. While at George Mason, he used the mitochondrial DNA of a 500-year old Incan ceremonial sacrifice to discover a contemporary relative living just outside of Washington, DC.

Crews holds a master of science in genetics from George Washington University in Washington, DC, specializing in DNA-based human identification.

• The New Age of Genocide and the Science of Large-Scale Human Identifications (April 14, 2005)