The Killeen Police Department officer who shot and killed Patrick Warren Sr. during a psychiatric call on Jan. 10 is a decorated military veteran who served 16 years in the Army, including a pair of deployments, Army officials verified this week. The police officer, Reynaldo Contreras, worked as a Patriot Launching Station operator and Avenger crewmember during his time in the Army, from 1999 to 2015. He left the Army as a sergeant first class and deployed to Kuwait from November 2011 to October 2012 and to Iraq from September 2003 to May 2004, according to the Army. He served at Fort Hood between March 2009 and July 2015. Contreras, a five-year veteran of KPD, is on administrative leave while KPD detectives and the Texas Rangers investigate the case, which is normal protocol for officer involved shootings.