the plane. the flight from knoxville, tennessee, landed safely in denver last night. a bomb squad checked the plane and cleared the scene in just a few hours. investigators are not releasing any details about exactly what happened, only describing it as a quote potential security threat. >>> and a plane going from egypt to new york was just diverted o scotland. the bbc says one of its producers was on that flight and found a note in the bathroom that said i'll set this plane on fire. the british royal air force sent the fighter jet to escort the plane to scotland. police there are now handling the incident. >>> and kate middleton attended the queen's birthday celebration in london today. possibly the last appearance before the birth of her first child. she smiled and waved to the crowd. here to discuss the royal baby