Lieutenant Colonel John Lassiter is a retired Air Force Aerospace Engineer who has worked on a variety of aircraft in his long career, including the F-15 fighter and the C-130 aircraft. Lassiter worked for nearly 30 years at NASA/Marshall Space Flight Center in the Test Laboratory, where he supported numerous programs such as the Space Shuttle and Space Launch System, conducting structural dynamic and fluid dynamic testing. Today, he is a docent at the Space and Rocket Center, and joins Dare to Explore to talk about the A-12 Oxcart on display in the museum.