You don't put some other guy's logo on your web site. Never mind the legalities, it's wrong. Unless you are formally connected in some way with SwiftVets and POWs for Truth, you should not be branding your web site with their logo.
It's called a gift Nick. If you think they might have a problem with it, then by all means contact them, I have. My personal wish is that all 254 of them can come to the site and eat up my bandwidth along with the rest of the good folks here at FR and other sites of mine that will link to this little trove of happiness.
In other words: it is their site, Nick.
As of post 123 on the site, I don't see a post for "Nick Danger" or any other gum shoes. Did you use some other name to post your thanks?