Atac Briefing for Agents Frank and Joe Hardy Mission: To find the mastermind behind a possible attack at the Big Air Games. Location: Philadelphia, PA. Potential Victims: Top extreme athletes in the country. Thousands of spectators. Suspects: There may be a group of extremists working together. There may be just one.Dixon, Franklin W. is the author of 'Extreme Danger ', published 2005 under ISBN 9781416900023 and ISBN 1416900020.