jose ortego elementary school evacuated since 8:00 this morning when a bomb threat was found. kids have been waiting in their classmates and teachers while officers searched the campus. they made automated calls to alert the parents. in the past half hour the district decided to send the students home for the day while the investigation continues. >>> good news/bad news in the battle against ebola. the first u.s. patient, american doctor, has been released from the hospital after tests showed he did not have the virus. meanwhile, a new patient, an american journalist, arrived in the u.s. to begin treatment in another is struggling to survive. abc's elizabeth herr has more. >> reporter: ash comukpo is back home flown overnight in liberia landing in nebraska this morning. mukpo, transferred to an isolation ward in this center where he will begin treatment for ebola. his family expressing relief. quite a contrast to the family of thomas eric duncan in dplas whose fear and frustration are growing as they question the care and treatment he's received as his condition deteriorates.