Before revision: In order to house the Aurora Simulator, HDL moved from its downtown Washington, D.C. site to an area of land in White Oak, Maryland, which would eventually become the now-present Adelphi .
After revision: In order to house the Aurora Simulator, HDL moved from its downtown Washington, D.C. site to an area of land in White Oak, Maryland, which would eventually become the ARL Adelphi site .