<human>: I work for a company and I am the president/CEO, there are a few chair people on our board of trustees who have undermined me for the last year or so and I just said enough was enough and resigned this past week. To make a long story short, I received a call today that two of the chair members (who are the two which have corroborated this mess) had came into my office. I have security cameras in there and I decided to go back to the security tape and see what exactly they were doing. I clearly see them walking in, and then you see the camera go out (one of them unplugged it) and then the camera goes back on 3 hours later when they are leaving! I know that this unethical, but have they broken the law? If so, what have they broken? These two members are apart of the finance committee and I have no idea what they were doing in here for 3 hours! Please help me Reddit!

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Two co-workers came into my office, unplugged the security camera for 3 hours and plugged it back in when they left... Is this illegal?