Back in the 1980's there was an incident between Sierra Vista and Bisbee at a religious institution. Arizona DPS officers were holding at the sheriff substation in Sierra Vista and had radio contact with officers on the scene. When deputies on scene started taking fire Ralph Milstead, director of DPS refused to release his officers to assist. One officer said screw this, those guys need help and left to help them. He was fired from DPS and later retired from the Cochise County Sheriffs Office. There is a book about it. Shootout at Miracle Valley.
