Well, actually not. This, if true, seems perfectly in character:

“Kerry would revisit ambush locations for reenacting combat scenes where he would portray the hero, catching it all on film. Kerry would take movies of himself walking around in combat gear, sometimes dressed as an infantryman walking resolutely through the terrain. He even filmed mock interviews of himself narrating his exploits. A joke circulated among Swiftees was that Kerry left Vietnam early not because he received three Purple Hearts, but because he had recorded enough film of himself to take home for his planned political campaigns.”