On June 16, 1991, a tragic event known as the Father's Day Bank Massacre occurred in downtown Denver, Colorado, resulting in the deaths of four unarmed security guards, including William McCullum Jr., who was 33 years old at the time of his death. The incident began when a man, identifying himself as Robert Bardwell, a vice president at the bank, requested entry into the bank through a side freight elevator. He called the bank's guard room using a street-level security phone, prompting Guard Wil
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