robert mckee. oh and is from the global migration center. he's the deputy director and he knows that this route, this route for the dorian gap. it's a very well known route, if it's so well known, the atrocities that happened to migrate it so well, no. what do you do about that? here is fortunately, the darien gap. it's incredibly dangerous and has become a kind of a routine part of the migrant trail from people coming from south america through central america. and the only solution i see would be for someone, some organization to be there to meet migrants at the beginning of the gap in northern columbia and take them through to one of the shelters that the panamanian government hosts in central panama. ah, i don't know if that's who it feasible, but you know it's become part of ru, is a routine part of migration for a lot of people and a lot of people die passing through it become seriously ill, become seriously traumatized. let's tackle some of the questions that you can share with us for us. this is carlos. he says, the daunting region b

robert kennedy. not sirhan sirhan . >> reporter: they say a security guard is the prime suspect, 1988, that stunned a kpix reporter . >> stuff i have never heard before. reporter mckeeewed several people, an fbi agent, forensic scientist, and an investigative journalist. >> i don't think we really know what happened. >> reporter: dan had spent months looking into the shooting, his efforts were based in part on an fbi report indicating more bullets had been fired then sirhan sirhan's gun could hold and the fatal shot was delivered at point- blank range behind kennedy's right your. >> he would've had to have begun here. >> reporter: witnesses saw they never saw him get that close. but now with sirhan sirhan on the cusp of parole . >> he should never be released. >> reporter: they came to believe he acted alone and that the extra bullet holes were misidentified by the police. he also says the now deceased security guard passed a polygraph. >> he was wrongly accused. >> repeporter: ththey disagree, they want to test part the security guard's 22 caliber gun and compares those was to be once admitted in court when the gun of sirhan sirhan was re- fired in the 1970s, those