Camp David
Another common residence of POTUS makes this list of no-fly zones: Camp David in Maryland. This presidential country retreat is a “prohibited area,” which defines the airspace that craft must avoid. Prohibited areas like these are designated with a P, for “prohibited,” followed by a number; Camp David’s is P-40.
The area designated by P-40 has a radius of three nautical miles. The prohibition is always in effect, but when the president is visiting, the no-fly zone is expanded by way of a TFR, or temporary flight restriction. The TFR grows the no-fly zone to ten nautical miles.
