Can you really "mistakenly" enter a highly secured government facility just by taking a wrong turn? I know right around here, Fort Drum might as well be Fort Knox.
Assuming the first part of her story is true, it isn't difficult to accidentally end up where she claims she ended up. She is somewhat exaggerating about entering NSA HQ. She would have actually been at a guard post entering Fort Meade, which houses NSA HQ along with a couple of dozen other government offices and military units. Fort Meade is situated at the intersection of the Patuxent Freeway and the Baltimore-Washington Parkway. If she was coming from Ocean City, MD she was probable on the Patuxent Freeway and accidentally took one of the exits going into Ft. Meade thinking they were heading to the Baltimore-Washington Parkway. If you look at a map you see where the last couple of exits before the BWP are exclusively for access to Ft. Meade.
https://www.google.com/maps/place/Fort+Meade,+MD/@39.1041676,-76.7744008,3312m/data=!3m1!1e3!4m6!3m5!1s0x89b7e684d72bda8d:0x6eeccde1c5d60377!8m2!3d39.1042635!4d-76.7342399!16zL20vMHR0Y3Q?entry=ttu&g_ep=EgoyMDI1MDgxMS4wIKXMDSoASAFQAw%3D%3DSo, even though the exits are clearly marked, it's still reasonable that they made that mistake. Because of Ft. Meade's location it's probably a mistake that occurs quite frequently by people unfamiliar with the area.
The rest of her post is complete BS. The guard posts are built with a place to U-turn vehicles that aren't allowed on base. They would have given them directions back to the highway, had them U-turn and watched them carefully to make sure they followed directions and didn't try to enter the base. They wouldn't have diverted a resource to guide them back to the highway. Unless maybe they recognized that they were dealing with a vanload of DUmmies and realized they were too stupid to follow simple instructions.
In my experience they wouldn't have even asked for ID. I'm somewhat surprised that DUmpDiver had to produce ID and had it copied. I can only assume that Edwards was operating under some heightened security level for some reason.
As for the hidden gun and barking K-9, zero bouncies. As already pointed out, the dog was enclosed in a vehicle and isn't going to smell your gun over the guns carried by it's handlers. And, if the K-9 vehicle was in the lead taking them back to the highway, the dog was upwind of their van and wouldn't be able to smell anything related to their vehicle.
The only thing believable about this Bouncy is a DUmmy got lost.