ABC's Luis Martinez reports from Washington: Who was the person that led US forces to Capt. Mike Speicher’s gravesite in Iraq? It was a Bedouin who as a child had witnessed his burial in the desert. That nugget came out today in a Senate floor speech by Florida Senator Bill Nelson who was the Speicher family’s champion during the many years they held out hope he might be found alive in Iraq. Here’s what Nelson said on the Senate floor earlier today about how the search was resolved: "One of the first sets of questions on the debrief of any Iraqi detainee, and especially the high-value detainees, that the question would be asked: 'Do you know about an American pilot?' And of these leads turned up to be false or they led to nothing. And so it was that we expected that what would happened to find the final evidence would be a Bedouin tribe that would have been in the area of the Iraqi desert at the time that Captain Speicher punched out, when he ejected from his jet that was hit. …..and then the rest has been a mystery until a Bedouin thought to have been a younger child at the time of 1991 remembered a pilot being buried, couldn’t identify the location but knew of another Bedouin who was an adult at the time. And that Bedouin ultimately led the Marines to the site and an extensive investigation and excavation that occurred on the Iraqi desert floor."