MIT Police marked the opening of their new headquarters at 301 Vassar St. on Thursday, June 1. From left are Patrol Officers David Smith, Jesus Ostolaza Jr. and David Sacco and Sgt. Cheryl Vossmer. Photo / Donna Coveney

President Susan Hockfield congratulates Chief John DiFava of the MIT Police at the opening of the campus police department's new headquarters at 301 Vassar St. on Thursday, June 1. Photo / Donna Coveney

A version of this article appeared in MIT Tech Talk on June 7, 2006 (download PDF).