president obama has now outlaud it in this country. >>> was it a bird, a plane, a missile? whatever it came from, it did not represent threat to this country. there was no launch by any foreign military, but you can see the trail that missile left. sort of a vapor trail up in the sky. however, nobody has been able to explain what that vapor is or exactly what caused it. >>> a startling number here. 300,000 children, 300,000 in the u.s. are at risk of being lured into the sex trafficking trade every year. and it's happening right here as well in the washington area. >> that's right, anita. and tonight we hear one local mom's story desperately looking for her daughter who had become a virtual prisoner inside the sex trade. we have the story of a mother and daughter whose lives are now changed forever. >> i don't know. >> 100. >> not every night, but over the years, yes. >> reporter: while bianca was working the streets of dc, her mother was crying herself to sleep frantic to learn the whereabouts of her daughter to disappeared at the age of 12. >> i had good days and bad days