Since the mid 1990's the military service have required a DNA sample from military personnel.
If you have a request for information about DNA refer the requester to the address below:
Armed Forces Respository of Specimen Samples
for the Identification of Remains
16050 Industrial Drive, Suite 100
Gaithersburg, MD 20877-1413(301) 319-0366
If a DNA sample is received, return the sample to the sender with the correct mailing address.