DASSPThis symbol indicates that this airport and FBO are designated by the TSA as a DASSP Gateway for departures to KDCA (Washington Reagan National Airport).
Due to the security concerns surrounding access to the KDCA airport, special procedures are in place to allow general aviation flights into the airport. These procedures are covered under the DCA Access Standard Security Program (DASSP). Among other requirements, general aviation flights to KDCA must depart from a designated gateway airport and FBO. Although departing from a gateway airport and FBO is a requirement for flying into KDCA, there are other significant requirements that must be adhered to.
For additional information, visit the DASSP web site.