Priorities, people

During WWII, Germany tried to develop nukes, and for that nuclear program they needed heavy water, which was made at Vemork by Norsk Hydro in Norway. So, naturally, the Allies decided they needed to take that factory's heavy water production out in order to avoid the Germans developing nukes. One of the sabotage operations they sent was Operation Gunnerside, by many considered both the most important and most succesful sabotage mission of WWII (even though most modern scholars strongly doubt the Germans ever stood a chance of developing nukes). A team of Norwegian saboteurs who had been hiding in the mountains snuck into the factory, into the basement were the heavy water was made, set explosives, set the fuses, got out, confirmed the explosion, and left, without any casualties or shots fired. However, they were spotted. When they entered the basement they bumped into the factory's caretaker, a Norwegian man named Johansen. Johansen turned out to be very cooperative, but before they set of the fuses he informed them that his spectacles were somewhere in the room, but he wasn't sure where. Since eyeglasses were difficult to come by during the war, the saboteurs decided to help Johansen find his glasses. A frantic search ensued, the spectacles were found, the fuses set, and everyone got out safely before the explosion went of.