Book excerpt: From former Navy Seal operative and best-selling author Clint Emerson comes a fun, challenging, and seriously useful activity book that tests your observation, concentration, memory, reasoning, sequencing, and logical thinking skills. The Deadly Skills Puzzle and Activity Book is an entertaining companion to Clint Emerson's popular series of Deadly Skills survival guides and calendars. It features coloring pages, mazes, games, activities, and puzzles such as Pick the Pair, Spot the Difference, Killer Sudoku, Match Up, Word Search, and many more.