John Jones is working at the Lockheed plant in Burbank, California, where they are producing P-38 Lightning fighter planes. The P-38 was the only military aircraft in production in the U.S. from the beginning to the end of WWII. Over 10,000 were made.
John Jones' imaginings take about 4 minutes 20 seconds of screen time, but they are completed in only a few seconds between the time he writes "7:28 P." and then adds the "M." which his watch indicates is still 7:28.