I don't get the dark terminal. At the airport I work at, we have generators that kick on. We've gone dark before, but only for seconds.
Part of my job is to answer the "crash phone". It happens about once a week, but it is usually an aircraft coming in with an indicator light on and lands safely. My job is to dispatch what ever is needed to meet the plane. In the 15 years I've been doing this, we have not had an incident like that. (Thank heavens!) I am glad there were no serious injuries, although I'm sure the passengers were scared!