http://www.compuquilt.com/blockimg/2...ks/US_Flag.htm
http://cgi.ebay.com/ws/eBayISAPI.dll...m=300471127614
http://cgi.ebay.com/ws/eBayISAPI.dll...m=170449248754
A couple of these are small, but wouldn't really be any big deal to use the concept and make the size you need.
One is the right size.
I hesitate to say anything because sometimes I put my foot in my mouth, but I think I would discuss a concept like this with the veteran's advocate for your area. It really isn't any of my business, but my husband was a service connected disabled American Vet and I would want to know what they think about making a copy of a US flag in a project like this.