NoVAGO and The National Museum of the Marine Corps invites you to explore roughly 200 years of USMC history by teaming up and creating the new Adventure Lab 

When Groundspeak released a limited number of Geocaching Adventure Lab credits to various geocaching organizations around the world NoVAGO was lucky enough to have been chosen. These new adventures are similar to the “lab caches” available at megas but will be in place for a much longer time, perhaps even permanently.
The National Museum of the Marine Corps is a lasting tribute to U.S. Marines–past, present, and future. You can only access the museum during normal open hours and admission is free.
Also if you locate and correctly answer all 10 questions you will also receive coordinates for the mystery cache “Oorah! USMC Adventure Lab BONUS!” which is placed nearby in a Prince William County Park with permission.