I was taken along for a job as a “technical advisor”, just in case. I only got told what the job is actually about on my way there - and my reply was: “The software cannot do that!”. We had spent a fortune on hiring equipment for this special job, and it would be a total waste.

So I told the project leader that I would write the necessary software for this job before the event starts. I got setup with server and PC before anyone else, and went to bed at 4am. Software worked perfectly, customer was happy.