You can see them from miles away, slowly materializing out of the ozone when you travel toward them on I-35W or 694 on a clear day, and the red safety lights pulsing through clouds or fog or the night sky.
And he will appoint him captains over thousands, and captains over fifties; and will set them to ear his ground, and to reap his harvest, and to make his instruments of war, and instruments of his chariots.1 Samuel 8:12 KJV