The root cause of the problem was that in 1944, on the US military's "Bataan" aircraft carrier, several soldiers who were arranged to perform the task were dining on the aircraft carrier. During the meal, suddenly, there was an ambush in Japan. The army launched a fierce attack on the aircraft carrier. A near-missing bomb landed next to the aircraft carrier and exploded. The explosion caused a huge shock to shatter the glassware on the aircraft carrier. The splashed glass slag was successively scratched 7 people. The crew and three pilots, fortunately, did not die, but because of this matter, the US government strictly ordered that no one who enters the aircraft carrier can carry or use glassware.
Just one year after the order was issued, a US Army lieutenant colonel wanted to enter the aircraft carrier to visit his cousin and was stopped by a naval soldier. The reason was that the lieutenant colonel had a black glass and finally, the glass. After being taken away from custody, it was able to enter.xx