difficulty level number three answer on 1th july

For many years old Sam Hawks had been night watchman at the Phoenixville National Bank. He was well liked for the faithful performance of his duty and for his cheerful manner. One evening Mr. Stuart, president of the bank, came to the bank at eight o'clock, greeted old Sam, and explained that he was going in to get some papers from his office, for he'd been called to the city and planned to take the ten o'clock plane.As Sam listened to his employer's words, his honest face puckered anxiously. "Don't take that plane, please, Mr. Stuart," he said earnestly."Why, Sam," exclaimed the banker, touched by the old fellow's sincerity, and obvious distress. "Why not? What do you mean?""Oh, Mr. Stuart," said Sam, "I had a dream about that plane last night. I saw it crash to earth and all the people aboard were killed. There was a terrible explosion and - Oh, it was awful!" The poor man was almost in tears.The bank president patted his arm and, to quiet him, said, "Thank you, Sam. I'll see about it," and proceeded into the bank to get his papers.Despite the old man's warning Mr. Stuart DID take the plane, and you'll be relieved to know, there was no accident. Returning to Phoenixville, the bank president's first action was to fire the night watchman, Sam. How come?