Some jobs are more critical than others and if you're involved in a job like that you double check everything .
Now I don't know how many successful No Nock raids there were but I'd bet the mortgage that there were less than there are commercial flight landings .An honest mistake would be a pilot forgetting to put the wheels down before landing .So just for giggles I checked the NTSB accident data for the last twenty years and found ONE commercial accident where the pilots forgot to lower their gear. This happened for the simple reason that they use two persons , go by a check list and verify everything. I don't know for a fact but I understand the same thing happens in the Navy aboard submarines.
This was a three month investigation , the raid comprised of fifteen officers .Why couldn't one of them verify the most important thing that they were going to the right house.
Tell me about it. I work in the petro-chemical industry. I work for a contractor. I would never dream of opening a line on the say so of someone else without first walking the line out myself to ensure all valves were closed and bleeders opened so systems is drained and clear. It would not matter if the plant manager himself said the line was clear, it is my job to ensure my safety and the safety of my coworkers before the task begins.