Planeflag here. We've been tracking odd flight patterns made by N529JK south of DC for months. Plane often maps out points of interest (possible trafficking pipelines, Warrenton Clown Training Center, and 9/11 places of interest such as Westover AR Base and King George Landfill).

Yesterday N529JK flew an ampersand shape before landing. Here's our team's decode. We found it connected to Q post 1144 in several ways.