Founded in Randolph, Massachusetts, in 1973, David Muir shares the craftsmanship behind Randolph Engineering, a 3rd-generation family business creating American-made sunglasses. ––– Subscribe to ABC News on YouTube: https://abcnews.visitlink.me/59aJ1G ABC News is your daily source of breaking national and world news, exclusive interviews and 24/7 live streaming coverage. Download the ABC News app for the latest headlines and alerts: https://abcnews.go.com/devices Watch 24/7 coverage of breaking