parking lot. >> he seemed like he didn't know much about guns but he was interested in learning. >> within days, neuman was at a gun range blasting away for 40 minutes at a man-shaped target. nine days later he put on a disguise and crept into the sneidermans' yard. rusty spotted him and called 911. >> he's running. i think he has a gun in his back pocket. >> was this a practice run or an aborted murder attempt? neuman had bolted when rusty confronted him. still, he was back on the computer a few days later, this time searching for a local costume store, looking for another disguise. and then the prosecutors asserted the final countdown to murder began. 2:30 in the afternoon of november 17th, neuman rented a silver kia minivan. the desk clerk remembered him. >> he was in a hurry and very impatient. >> just after 5:30 in the morning on november 18th, a security camera recorded the silver minivan pulling into the