Night shift

"But, in the end I made it, with my last and most precious tool, a battery. I used wires and tried to transmit electricity to the locks. It wasn't easy, as I've never known how to do electronics or anything like that. But with the weight of the human race on my shoulders my great hidden talent came to light and I was able to transmit electricity to the door. So I managed to open it, but I closed it quickly I couldn't stand there and be discovered." Said the Chief in a loud voice proud of what he had accomplished. 

The three of them stood in silent amazement at how their boss had told them the story, even if it was exaggerated, the last part did not stop them from feeling the blood in their bodies boil with excitement. 

"So how did you get so badly hurt?" asked Jim. 

The chief's mouth snapped shut and he went silent. 

" Boss?" 

"I fell down the stairs when I went to drop off the cleaning equipment..."