My father & I took a quick trip up to Medical Lake today, to do a banking transaction which involved a larger sum of cash.
The first stop we made was the Eastbound Sprague Lake Rest Area & noticed a few looks but nothing more. Next stop we made was at Washington State Employee Credit Union in Medical Lake. Got to the branch as they were opening, & conducted the transaction. On the way out of the branch, the manager was at the door, introduced himself, & stated "nice handgun you have there", & pointed down to where the gunbuster sign was posted (at eye level for a 2-3 year old & clear with black & red symbols). He stated that as a Federally-insured financial institution that he prefer that next time I come in I concealed carry.
No other reactions that I noticed.
The money is federally insured, but it is still a private business. Not a federal building.