David A. Clary is the author ofnbsp;Adopted Son:nbsp; Washington , Lafayette , and the Friendship That Saved the Revolution; Rocket Man; and most recently Eagles and Empire:nbsp;The United States , Mexico , and the Struggle for a Continent.nbsp;Clary is the former Chief Historian of the U. S. Forest Service,nbsp;has taught history at the university level, and lives in Roswell, New Mexico, with his wife, Beatriz.