For getting to the Day 2 site on North Hangman Tree Rd, there are conflicting directions.
The Venues & Directions page
on the meet website says, "You will be entering the base on Russell Road at the same security checkpoint as on Saturday."
The information flyer in the meet packet says, "You will be entering the base on N. Hangman Tree Road near the finish arena," with an accompanying Google "satellite" view showing the entrance as being from Aden Road (Va. Rt. 646).
Which is it?
If I don't see a posting here in the morning, I'll go by the flyer; I'm guessing it's newer. (With my fingers crossed that I don't get sent on an extra 45 minute drive back around the base, through the main entrance, and following the winding route through the base.)