wooow nice stuff! I love the aircraft
I don't believe that this picture is concept artwork for RAFRAG. If you look at Goad's photostream, you can see a full color version of this and the caption says it's for a bike race in Dayton, Ohio. However, he does have the original drawing of the kids playing baseball with a grenade up there.
~|Vredina|~, those artworks are great! Thanks for posting 'em, great find.
I wonder if you know the artist's name? I know you found these artworks in Flickr, but could you give me his/her account or something? I'd like to check out more of his/her stuff.