We run this out of Germantown, about 8 miles from Damascus. There's no branch or drop box here - a truck comes from Germantown with the opener parts most likely to fit a house of your era already loaded, based on what we see across this part of the service area.
When you call, tell us the brand if you can read it off the unit, roughly when the house was built, and what the opener is doing - or not doing. That's usually enough to guess whether we're bringing a logic board, a drive gear kit, or just diagnostic tools for something electrical. Guessing wrong means a second trip, and a second trip costs you time, not us.