Dr. Travis S. Taylor heads up the cast of The Secret of Skinwalker Ranch and can be seen on The Machines that Built America on the History Channel. He has worked on various programs for the Department of Defense and NASA for the past twenty years. His expertise includes advanced propulsion concepts, very large space telescopes, space-based beamed-energy systems, future combat technologies, and next-generation space launch concepts. Taylor is also the author of pulse-pounding, cutting-edge science fiction novels, including the highly popular One Day on Mars, Tau Ceti Agenda, and the groundbreaking Warp Speed series. He is a regular on the History Channel’s Life After People and The Universe series.

Timothy Zahn is a Hugo Award winner and the author of the New York Times #1 bestseller, Heir to the Empire, as well as the best-selling Star Wars: Thrawn series of novels. Born in Chicago, he earned a B.S. in physics from Michigan State University and an M.S. in physics from the University of Illinois. He sold his first story to Analog in 1978 and immediately attracted attention as a new writer of science fiction based on real, cutting-edge science. Baen published his popular Cobra trilogy in one volume. His other popular series include the Conqueror and Dragonback novels. With David Weber and Thomas Pope, he is the author of novels A Call to Duty, A Call to Arms, A Call to Vengeance, and A Call to Insurrection. Zahn has written more than 50 novels, including the recent Cobra Rebellion series entries Cobra Outlaw and Cobra Traitor.

Michael Z. Williamson was born in Birkenhead, England and raised in Liverpool, and Toronto, Canada, before moving to Columbus, Ohio. An 18-year veteran of the US Army and US Air Force, he is a state-ranked competitive shooter in combat rifle and combat pistol. His other books include Freehold (Baen), the Target Terror series for Harper-Collins, so far including Targets of Opportunity and The Scope of Justice, and The Hero, a collaboration with New York Times best-selling author John Ringo for Baen. He currently lives in Indianapolis with his wife Gail, their two children, and various cats that are not to be trusted.

After retiring from the USAF and flying medical emergency helicopters, Kacey Ezell is a full-time writer who specializes in sci-fi/fantasy/alt history/horror fiction. Her first novel was a Dragon Award finalist in 2018, and her stories have been featured in Baen’s Year’s Best Military and Adventure Science Fiction compilation in 2017 and 2018. In 2018, her story “Family Over Blood” won the 2018 Year’s Best Military and Adventure Science Fiction Reader’s Choice Award. She writes for Baen and Chris Kennedy Publishing.