however, as to the type of stains that were present and to the possible cause, they did not make any determination at that time. >> under a magnifying glass, crime scene reconstructionist jerry findlay found tiny drops of blood embedded in the fabric, about 1/32 of an inch in diameter. it was medium-velocity impact spatter, the kind usually produced when someone is hit with a blunt object. >> medium velocity is an instrument being wielded by a human, for example, a baseball bat or a rock or something like that. it's not going to generate that much force. >> the blood stains were clustered above the knee, indicating the assailant was kneeling as he attacked. >> so whoever was wearing those jeans was in close proximity of impact at the time of impact. >> and dna testing confirmed the blood on the jeans was laura's.