Camp David and Underground Pentagon located on South Mountain. All very close to my property and to Smithsburg and Thurmont. There is always a no fly zone over Smithsburg MD as it backs up to Camp David on the Washington County side of Camp David. Thurmont MD is just north of Frederick MD and does have air traffic. Local airport is Frederick Municipal Airport. All Private planes. In Washington County, the Hagerstown Airport runs ways were enlarged and lengthened to handle AirForce1.