What is the worst thing you have seen in your role as a Sys Admin?

I was once hired at a company by the CIO to head the IT Department. Two weeks after my hire date, the CIO abruptly left the company. When I inquired w/ my new boss, the former head of engineering, he said that there had long been animosity between the CIO and CEO, something confirmed by another employee in the IT Department. The CEO never trusted me, as I was hired on the recommendation of the CIO he disliked and distrusted so much. The CEO hired a friend to perform personal desktop support in the office, and that gentleman and I would butt heads, b/c he was constantly reporting to the CEO on how the IT Department should be run, and the CEO took direction from him. He undermined multiple projects we were tasked w/ working on and wasted an unbelievable amount of time and resources. When the senior sysadmin told me that he'd received a job offer w/ a pay raise commensurate w/ his experience, he offered me a chance to match. The CEO said, "Wish him well." Since the CEO also refused to pay a legitimate rate to a new sysadmin, my options were limited. Since we were in a bind, the CEO decided to hire a contractor at about five times the rate he would've been paying a full-time replacement. It made no sense, but no one ever accused him of being a critical thinker. The new contractor was immediately hostile to me and believed that she was there to run the department. I had made plans to leave, but in the interim, I had to take a trip to one of our satellite locations for an audit. While there, the contractor accessed one of our network appliances and physically shut off access to our website. When I was notified, I had to restore remote access, then attempt to figure out what the problem was. Once I did, I restored the access, but the contractor shut it off again, pretending that they had accidentally done so. I got it up and running and returned to the home office a few days later, where I was unceremoniously fired. I spoke to a law firm, and they agreed that the contractor had engaged in tortious interference in the practice of me being able to perform my job satisfactorily. The company settled w/ me very quickly, and they sold their practice less than one year later. It was the worst job I've ever had, but it taught me a lot about what red flags to look for prior to accepting an offer of employment.