Frank Zawada at the display for Colorado Astronaut Jack Swigert at the Wings over the Rockies Air and Space Museum. Denver, CO, May, 2009. He retired from the Air Force after 27 years and now works as a military consultant through Johns Hopkins University. With humility, Frank says that he "contributed to changing history." He was on the development team for the Global Positioning Satellite system. Now, almost every cell phone has a GPS chip built into it. "We couldn't even think of, back in the 80s what [GPS could do]," he now says. "And it did! It changed the world. I was the first operational commander for the GPS command and control center. So, yeah, space did get into my blood."