right now, as i understand it from officials, their schedules are not consistent across the workweek, and that can add additional wear and tear to people. and then there's in question of how many people you need in the tower to keep them awake. in one of these incidents in knoxville, i believe it was, there were two sections of the tower, one was a regional controller, one was local, the regional controller realized something was wrong, went down repeatedly to try and wake up the local guy. just wasn't able to do it. will two controllers be the answer? who knows? we'll find out in the months to come. >> as long as you don't have two sleeping controllers, i guess you're okay. thank you, appreciate it. searching for more bodies and clues to a serial killer. investigators in new york now plan to use high-resolution aerial photos to help examine parts of long island. so far, at least eight sets of human remains have been found. i want to bring in our senior correspondent, allan chernoff, who joins us from jones beach on long island. give us a sense of what is