On June 9, 2003, Officer Chambers was on patrol at Union Station when reports came in from dispatch regarding a man seen with a grenade. Officer Chambers located and stopped the subject. Once stopped, the subject pulled the pin on the grenade and attempted to drop it. Officer Chambers made a split second decision and grabbed the grenade in the subject's hand and squeezed it, not allowing it to detonate. Officer Chambers then wrestled the grenade from the suspect's control, and moved away from bystanders and other public safety personnel. Officer Chambers held the grenade for 15-20 minutes waiting for the bomb disposal team to arrive. Bomb disposal officers arrived and took the device from Officer Chambers. The device was later determined to be inoperable, yet this was unknown to Chambers at the time of the incident.