Jonathan Coddington is the curator of arachnids and myriapods at the Smithsonian Institution’s National Museum of Natural History, in Washington, D.C.

Mantill Williams is a spokesperson for the American Public Transportation Association, in Washington, D.C. Patrick Smith is a commercial airline pilot and the creator of askthepilot.com, an air-travel info site. John Jensenius is a meteorologist and a lightning safety specialist at the National Weather Service in Gray, Maine. John Andersen is Schindler Elevator Corporation’s district service manager for downtown Chicago, an area that is home to the Willis Tower, the tallest building in North America. (It has 92 elevators!)