Thanks, Donna, that makes sense about the guns.  It seems it is not in
any of the military handbooks either.  Talked to active duty guy locally
and he's checking with buddy on Arlington honor guard.  Surely they must
know.  Most so far seem to think it's just tradition.  Also heard from a
guy in Illinois- says unknown from wwi was buried again in A in 1921.
Though that might be reason.  Local guardsman here thought it might be
that there are 21 letters in USA!  We learn so much this way, great fun.
Thanks for answer.  Where are you from?  Lori
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