KEN YUSZKUS/Staff photo. Beverly Mayor Michael Cahill, left, and squad leader of the Massachusetts task force 1 urban search and rescue team Mark Foster lay down the last block at the new FEMA 911 memorial near the Beverly airport. In the background is the structual steel recovered from the 94th and 95th floor of the north tower of the Twin Towers which was destroyed on 9/11. 9/11/14