vets_code	vets_text
00	N/A
01	Nonveterans
02	Veterans
03	Gulf War era veterans
04	Gulf War era II veterans
05	Gulf War-era II veterans who served in Iraq, Afghanistan, or both
06	Gulf War-era II veterans who served in Iraq
07	Gulf War-era II veterans who served in Afghanistan
08	Gulf War-era II veterans who served in both locations (Iraq and Afghanistan)
09	Gulf War-era II veterans who served elsewhere (not Iraq or Afghanistan)
10	Gulf War era I veterans
11	Vietnam-era and earlier wartime veterans
12	Other service periods veterans (may include peacetime)