Dozens of Companies Unveiled Innovative Products Ahead of the 51st SnF Aerospace Expo Kicking off the 51st SUN ‘n FUN Aerospace Expo, we hosted the second annual SnF Innovation Preview to give more than 20 companies just enough time in the spotlight to debut their new planes, products, engines, accessories, and more… In other words… it was a LOT of news, and it’s all still up for your viewing pleasure.