OK, found the diary/ journal thing.
Quote:A Kerry campaign official, speaking on background, told The Washington Times yesterday that the "we" in the passage from Mr. Kerry's journal refers to "the crew on Kerry's first swift boat, operating as a crew" rather than Mr. Kerry himself.
"John Kerry didn't yet have his own boat or crew on December 2," according to the aide. "Other members of the crew had been in Vietnam for some time and had been shot at and Kerry knew that at the time. However, the crew had not yet been fired on while they served together on PCF 44 under Lieutenant Kerry."
http://www.able2know.com/forums/viewtopic.php?p=861966
So that would make sense to me, that this whole crew as a whole, this "we" (not "I"), hadn't been under fire. The fact that other members of the crew had been shot at in Vietnam and he knew as much underscores that he was talking about all of them, collectively. Like, if the Olympic basketball team is made up of people from various teams who have lost on their own teams, the new Olympic basketball team can still say "we are undefeated." (Until this year, of course. But I digress.)
At worst, though, it seems like a "Christmas" misstatement, in his own journal no less. There is lots of other corroboration for enemy fire when he got his first Purple Heart; nimh lays out most of it here:
http://www.able2know.com/forums/viewtopic.php?p=864265#864265
Though more has come in since, I think.
Give me more info on 2 and 3 and I'll see what I can do.