A few years ago, I took a armed security class with a top instructor & owner/CEO of a well known security/skill training school. He also served on the state's security industry training panel.
At a 2009 meeting of state officials & security officers/supervisors, he told a quick story.
The security trainer told our group about a high ranking state trooper who had to check all the highway patrol offices as part of his duties. The senior trooper told him that EVERY troop office in the state had at least 1 hole in the ceiling,