Has anyone seen the movie "Saving Private Ryan? I just watched it again last night and I noticed near the end of the movie when the Mustangs are flying over shooting up the Germans, Capt. Miller asked what they were. One of his troops says "they're P-51 tank busters, sir." Was this some kind of mistake by the writers, or was there actually such a thing as a "tank buster" version of the P-51? I've never heard of one...