in desert storm and desert shield. he says that years after his service, he was overwhelmed by post-traumatic stress disorder. >> it is flashbacks and hypervej lens and dreams. >> reporter: haunted by the lives he could not save, williams says he fell apart and struggled to keep jobs. now, he has full time administrative work, but it is not earning enough to pay child support for four children and rent. the national coalition for the homeless estimates that 1 in every 5 of america's homeless has worn a uniform and it is an embarrassment that the v.a. has made a priority to end in five years. they have a more ambitious goal to house williams and all of the veterans within five months. they say it is do-able, because they only have 40 homeless vets