good morning. i'm john muller. >> and i'm diana perez. here's some of the stories we are following on "world news now." air travelers could face frustration today as delays at the airports. stay tuned for the latest from accu-weather coming up. new report on the sandy hook shooting sheds light on adam lanza's background. it doesn't provide a motive. it said he had significant mental health issues and in the end he only communicated with his mother by e-mail. anonymous caller caused yale university to go on lockdown. a huge backlash after the i abrupt ending for a popular character on the hit show "family guy."