PERHAPS HIS MOM WAS LYING?? HE MAY BE THAT MAN AT ARLINGTON. MAYBE THEY CAN TELL YOU WHAT THE "P" STANDS FOR.

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18. DUFFY, RICHARD P
M/SGT USAF 16 AU FORCE 1401 AIR BASE WG
DATE OF BIRTH: 11/19/1914
DATE OF DEATH: 01/02/1960
BURIED AT: SECTION 38 SITE 1623
ARLINGTON NATIONAL CEMETERY
C/O DIRECTOR ARLINGTON, VA 22211
(703) 607-8000