To obtain a burial flag, a copy of the Veteran's separation document (form DD-214) is required by the funeral director.
However, the burial flag can be obtained from the Huntington Beach Post Office 92647 on Warner west of Goldenwest. Form 27-2008 is required, and can be obtained at va.gov. Select Veteran Services, then Burial Flag. Go down to How Can You Apply?, and click on the VA Form 27-2008, Application for United States Flag for Burial Purposes
Complete the form, and take it to the post office.