Colonel Robert Spindel was the commander of a military team originally sent to the West Tek research facility on January 3, 2076 to monitor the experiments conducted there in the interest of national security.
On October 10, Maxson and his men discovered the scientists at Mariposa were using military prisoners as test subjects in their experiments with the Forced Evolutionary Virus. Morale among the security detachment collapsed, and Spindel suffered a mental breakdown, locking himself in his office. Five days later, after attempts to talk to him through the door failed, Maxson and other members of the security team forced their way into his office. They then witnessed Spindel commit suicide, his last words to the team telling them he was sorry. After Spindel's suicide, Maxson became the de facto leader of the team which later became the Brotherhood of Steel.