Ruth McCredie was about in the middle of the field, she decided. Thiswould be a good place to get a few more samples. She looked back at therow she was standing in and saw four ears laying in the dirt."Perfect," she said, reaching back for another plastic bag. "These will begreat."Hurrying down the row towards the ears, she was surprised to hear a crackin the distance. Before she could react, she felt the blow of the bullet enteringher body. She stared,...