I was born and raised in the state of Connecticut. Even if you also were born and raised there, you may not realize Connecticut is the arsenal of America.
I grew up with gunsmiths and guns. Every major industrial city in Connecticut often had historically critical gun manufacturers on the roster of local business. Colt, Remington, Sturm Ruger, Mossberg, Charter Arms, the list goes on and on. At peak, over 20 gun manufacturers toiled in their armories.
My extended family included a few of the real deal. Including one chief gunsmith for a firm rolling out military gear as well as sporting firearms on an international scale. The straight and narrow machinists as well as alley mechanics could have been employed like the folks in this video given similar circumstances.