people in joplin are using social media to find people. will norton's friends say, help us find will norton who has been missing since the tornado. a facebook panel has been set up to find other missing people. friend of randy england says he has been missing for over 24 hours, inside the home depot when the tornado destroyed it. a relative is searching for 94-year-old dorothy clark. she says, my great grandma suffers from dimension. s she lives with my great aunt delores. please help. tonight at 9:00 eastern, piers morgan will have heart-wrenching first-hand accounts from survivors. on a.c. 360 at 10:00, anderson cooper reports with more from the recovery effort. president obama will be in joplin after he returns from his european tour. he and the first lady met with