What is an example of foreshadowing in the flying machine by Ray Bradbury?

One example of foreshadowing in "The Flying Machine" by Ray Bradbury is the mention of the "silver flash" that the narrator notices in the sky. As the story unfolds, it is revealed that the silver flash is actually the flying machine that is central to the plot. This initial mention of the silver flash early in the story plants the seed for the reader to anticipate the appearance and significance of the flying machine later on.