It always annoys me when a museum crowds an exhibit in so you can't get clear shots of it! Yeah, I've heard the arguments...dust...bird dookie... THEN they'll jump all over you for hanging over a balcony rail by one knee and bracing yourself against a wingtip just to get a decent shot! And don't even TRY warning them your fursona (who happens to be shopping for weapons for his latest little raid on Oklahoma) just crawled up the exhaust!