One of the first times I realized the need for armored vehicles in police operations was during the 1968 Glenville Shootout and riot in Cleveland. Here's what happened.
Cleveland police officers conducting surveillance on a militant group's headquarters suddenly found themselves shot at by 25 militants armed with M-1 carbines. Police reinforcements raced to the scene from across the city, only to come under intense rifle fire from the militants who had fanned out throughout a multi-block area. The scene was deadly and chaotic, made worse by the darkness the fact that the police had no portable radios, no body armor, and little extra ammunition.
When the 90-minute gun battle ended, seven people were dead: three police officers, a civilian helping police, and three militants. Another dozen officers were seriously wounded, and one died years later from his wounds, bringing the total of police killed to four.
Many of the police casualties occurred as a result of courageous attempts to rescue downed officers. Calls for armored vehicles went out over the airwaves and, eventually, seven Brinks armored trucks arrived. It was too little, too late. But the Brinks trucks proved their worth in the ensuing massive rioting that followed the shootout.
Lesson learned. Through a 1970 federal grant, the Cleveland Police Department formed a new tactical unit, equipped with a custom-built armored command post. Cleveland PD's original armored vehicle would continue to see service until late 1997, when it was replaced by a new, improved ARV.