Cracker is one of the United States Army's most valuable weapons:  a German shepherd trained to sniff out bombs, traps, and the enemy.  The fate of entire platoons rests on her keen sense of smell.  She's a Big Deal, and she likes it that way.  Read by Kimberly Farr, 7 hours, 32 minutes, 6 compact discs, produced by www.listeninglibrary.com