The Virginia Military Air Installation Disclosure Form can be found here:
Virginia Military Air Installation Disclosure Form
Simple explanation (NOTE: This is not legal advice. Consult an attorney if you have questions):
This disclosure is used when the property is located in a locality in which a military air installation is located (or to confirm it is NOT located in such an area).
If it is in a locality in which a military air installation is located, the disclosure form lets the owner(s) represent if the property is located in a Noise Zone and/or Accident Potential Zone (APZ), as shown or referenced on the Official Zoning Map designated by the locality in which the property is located.
Please view the form at the link above and see the applicable section in the Code of Virginia.