I was just thinking...

If the navy purchased a vacuum for a nuclear submarine, it would need to be manufactured to DOD specifications. Given that the vacuums would need to operate in the most extreme conditions, this vacuum would probably be considered a negative pressure, debris removal and filtration system and cost about $19,000 per unit. Then the navy would need to procure a parts replacement contract and maintenance training system for the thing and that would run about $20 million per year. On top of all this, the navy would then need to contract an operations and field maintenance manual for this very expensive, critical component of the nuclear navy. Any idea whether that would require three or four separate technical manuals?

No wonder the poor sailor caused a fire. He probably hadn't completed the eight week school to be rated in the proper operation of the unit. I blame the training staff.