(From left to right) Ajiah Pierce, Raya Garrett, and Bobbi Antonsen, fifth graders, blow through two pieces of paper to demonstrate Bernoulli’s Principle during their STARBASE visit at the South Dakota Air and Space Museum, Feb. 11, 2011. Bernoulli’s Principle describes how increased velocity leads to decreased pressure and lift. (U.S. Air Force photo/Senior Airman Kasey Close)