Park rangers facing deadly foes¿Two tales of danger in the Grand CanyonIn Canyon Under Siege by Valerie Hansen, hostages¿ lives hang in the balance as FBI agent Holly Forbes works with her former crush, park ranger Gabe McClelland, to outwit dangerous criminals. And in Jodie Bailey¿s Missing in the Wilderness, a rescue mission turns into a race for pure survival when a killer begins stalking park ranger Morgan Dunham and her military ex-husband, Eric Larson.