Mr. McCain left a lasting impression on Mr. Day, and so did a young Navy veteran named John Kerry who spoke critically about the war before a congressional committee in 1971. Mr. Day was deeply offended, and in 2004, he had a chance for payback.
Mr. Day joined a group called Swift Boat Veterans for Truth, which accused Mr. Kerry of inflating his record in Vietnam. Other veterans and reporters disproved many of the accusations, yet Mr. Day stands by the group and its aims.
By "spoke critically" the AP means "accused his fellow soldiers of heinous war crimes including rapes and beheadings." And as for any Swift Boat claims about Sen. Kerry being disproved: name one. Don't you remember that T. Boone Pickens offered a million dollar prize to anyone who could successfully dispute one of the charges? He never had to write the check --no one even seriously tried. Here's the correspondence he had with Sen. Kerry at the time.