Last October the Wichita Eagle profiled Ken Gebhart, the 79-year-old owner of Celestaire, a local company that sells navigation equipment, including sextants. The sextants are Chinese imports; Celestaire itself makes the navigation tables and almanacs that accompany sextant use. You might have thought that sextants had gone the way of horses and buggies, but apparently the U.S. Navy is reviving celestial navigation training, as a fallback in the event of a GPS failure. [via]