at david kerr's autopsy, investigators found a tiny metal post in his chest, the kind used in a switchltimately, our crime lab was able to determine the type of switch that that post would be a part of, a manufacturer, and to whom did the manufacturer provide the circuit or the switch? radioshack. well, there are lots of radio shacks, but at least we knew there were radio shacks in anchorage. >> but both cheely and gustafson were incarcerated at the time. >> how could they have done it from jail? how could they do this? how could they do that? which was all of our questions. you know, how could somebody do that from jail. >> since prisons routinely record all inmate conversations, investigators found this coded conversation between gustafson and his sister peggy. it took place shortly before the bombing. >> yeah, now this is to fix your car, remember? as soon as you find out which way is on and which one is off on the sliding one, glue it in place like i described, right below the surface. >> uh-huh. >> so that when it's pushed towards the side, it's on. and when it's pushed towards th

two military planes through the remains from kerr kiev to the netherlands. david chater sent this report. >> reporter: returning to the netherlands where the tragic journey began, the first of the victims of mh17. 40 bodies, yet to be identified. carried out of the cargo planes with the dignity and respect they deserve. scenes in marked contrast of the scenes in the battlefield of eastern ukraine, where the plane was shot out of the sky. [ "last post" plays ] >> reporter: the dutch royal family were in attendance at the military base at the airport, as well as more than 1,000 relatives of the victims. their anguish and grief sharpened by the fact that none of them knew whether their loved ones were in the coffins before them. it could take the forensic teams in the netherlands weeks or months to fully identify all of the victims. it will be a gruelling time for the relatives who are standing now watching the bodies being taken to the hearses and then to a military base where the forensic teams will be at work. 193 of the victims are from the netherlands. flying at