Re: There is Testing it and there is Testing it
It's noticeable how prominent those big Red Emergency Power Breaker buttons look to a disgruntled employee whose job is being outsourced pretty soon and knows it won't end well for the Company involved. Especially when it controls the power to a (hypothetical, of course) data centre the size of 5 football pitches.
I know of one example - a US company was very jittery about their size and prominence in the newly built Data Centre, when they set up a European Base. It's odd, the need to explicitly explain that you do need to be able to quickly find these big red buttons to kill the circuit breaker, in an Emergency, emphasizing the point, you don't let anyone into those areas you have any doubts about.