Guest Earl Swift, a former reporter for The Virginian-Pilot and New York Times bestselling author of “Chesapeake Requiem” discusses his brand-new book “Across the Airless Wilds---the Lunar Rover and the Triumph of the Final Moon Landings,” just out from William Morrow.  Swift talks candidly about how NASA’s Apollo Lunar Moon Rover transformed the Apollo 15, 16 and 17 missions and argues that these last six moon-walking astronauts don’t get enough credit as bona fide explorers.