casing in grass, and we are not sure of the exact area. but in this case, being the fact that it's murder, i'm willing to try any idea and it was worth a shot to do. >> police found help in nearby gettysburg, pennsylvania. don hinks known in these parts as a retailer who sells metal detector equipment. these metal detectors were often used to unearth military artifacts. >> i went out and found three french and indian war cannon balls and one whole on the braddock campaign, that probably gave me a bigger high than this .25-caliber shell casing. >> but hinks and several colleagues were happy to do what they could, despite the fact that harshman farm was several hundred acres. >> but there was so much trash out there, so much farm equipment, this is the place where they would throw the garbage along with the tin foil and toothpaste tubes and all the