The citation can be found on JohnKerry.com You will notice John Lehman's signature. Lehman (who of course was more recently a 9/11 commissioner) was Secretary for the Navy from 1981-87. 12-18 years after Kerry left Vietnam. Lehman's signature also appears on Kerry's Bronze Star citation. My first guess was that Kerry DID throw away his medals (not ribbons) in 1971, and later had them replaced. But check out this piece on FrontPageMag.