Any great endeavor requires a great team. That is certainly true of publishing a book. Thank you to Julia Richardson and Maire Gorman at Houghton Mifflin Harcourt, who first suggested adapting The Heart and The Fist for younger readers. My editor Julia shepherded the book with enthusiasm from start to finish. My literary agent, E. J. McCarthy, has always been and continues to be a source of wise counsel. Lorin Oberweger helped me step into the minds of teen readers. She was a pleasure to work with, and her insights made this book stronger. Rachel Wasdyke helped to spread the word and arrange the book tour. Richard Schoenberg allowed us to use his excellent photographs of SEAL training. Steve Culbertson is a great friend, and he and Karen Daniels of Youth Service America wrote the Mission Planning Guide. Dave Whitman, Krystal Taylor, and Katie Ricks are superb colleagues who make work a joy. Tim Ly, who served as editorial assistant for The Heart and The Fist, did so for this book as well. My gratitude and respect for him deepens with each project. Sheena, as ever, is a bountiful source of love and support (and a great editor). Thank you. Thank you also to all of the parents and aunts and uncles and grandparents and coaches and teachers who encouraged me to write this book for young readers. And to the young readers who sent so many wonderful letters and notes about how you are training to become Navy SEALs, taking adventures to learn about the world, and volunteering in your community, thank you. You inspire me.