Attached is a PDF of the sites commonly used at Beltsville State Park for Fridays Field exercise.  Any additional locations at the Fairgrounds or through the local area are cool too. 
I will be set up as NCS at the Boat Ramp in the park with the M151A1 running a GRC-106, have not decided if I will be running an inverted V or just using the fourteen-foot vertical on the mutt. Think the inverted V works best for both local and distant stations.
Remember that the event is not just for people attending and operating from around Beltsville Lake but also an opportunity for those who cannot attend in person to take part from the home QTH and see how many of the vehicle, portable and backpack stations they can work during the event.
The 5403.5 USB Net will start at 1400 local and is expected to run until 1500
Certificates will be provided for all stations at the event that participate, maybe for distant stations too if I can con anyone into mailing this stuff.
Past events run from ten to twenty participants with about half being local running from military vehicles and backpack with the Hard Corp running things like PRC-47 sets!

Ray F/KA3EKH