Even back in the 1980s, when I first covered the Academy Awards, the Los Angeles Police Department made its officers evident. They kept tight control on street closings and watched for errant limos or suspicious characters. But Oscar secruity has grown increasingly tighter in the years since 9-11, and this year the LAPD is going to even greater lengths to protect the attending celebrities and the loyal fans who go out to see them enter the Kodak Theatre in Hollywood. Police are using an aerial high-tech imaging system that can spot potential terrorists wearing suicide bomb vests or plastic explosives that might slip through a metal detector. Plus, they are using bomb-sniffing dogs.