In the heightened security atmosphere following the September 11th terrorist attacks, Federal Protective Service Officer Ronald Sheffield, a 36-year-old White/Caucasian male and a U.S. Marine Corps veteran, was on duty at the McNamara Federal Building in Detroit, Michigan. On September 21, 2001, a mere ten days after the attacks, a call came in about a man with a gun at the building's metal detectors, a place where security had been significantly increased.
As Officer Sheffield responded and approached the man, who was waiting in the security line, the individual pulled a. 357 caliber handgun from his bag and opened fire, fatally wounding Sheffield. Other officers at the scene immediately returned fire, injuring the gunman before taking him into custody. The assailant was identified as David Sera. The incident unfolded in a tense environment, with thousands of federal employees and their children present in the building.
David Sera was subsequently tried and, on March 21, 2003, convicted of second-degree murder. He received a sentence of 30 years in prison without the possibility of parole. During the legal proceedings, it was revealed by Sera's parents that he had a history of severe mental health issues, including extreme paranoia and manic episodes, which had reportedly worsened after his service in the Navy. His parents believed that a fear of the government, intensified by the recent 9/11 attacks, contributed to his violent actions. David Sera later died by suicide while incarcerated. Officer Sheffield was survived by his two daughters.
