How the story grew over time
Williams hasn't always told that version of the story. In a March 2003 report for NBC News, he said that he hadn't learned about the attack on the other helicopter until after his Chinook had landed. "On the ground, we learn the Chinook ahead of us was almost blown out of the sky."
Over the years that followed, however, the story evolved to become more dramatic. In 2005, Williams told Tim Russert that "the helicopter in front of us was hit. A pickup truck stopped on the road, pulled a tarp back; a guy got up, fired an RPG, rocket-propelled grenade. These were farmers, or so they seemed. And it beautifully pierced the tail rotor of the Chinook in front of us." Williams didn't claim to have seen that happen, but he spoke in the vivid language of a firsthand account.
In a 2007 blog post, Williams told an even more detailed story of the attack on the helicopter:
"Not long after Wayne's warning, some men on the ground fired an RPG through the tail rotor of the chopper flying in front of ours. There was small arms fire. A chopper pilot took a bullet through the earlobe. All four choppers dropped their heavy loads and landed quickly and hard on the desert floor.
Again, Williams didn't actually claim to have been in the helicopter that was hit. But he did describe the incident in a way that condensed the timeline, saying that "all four" choppers landed quickly and hard, without mentioning that the first three had landed long before his. (It is worth noting that Williams may not have known how far behind the other helicopters he was, given that he could not see them.) In other words, the story had evolved again, and in a way that placed Williams closer to the attack.
Then, in a 2008 blog post, Williams made the shift to actually claiming that his helicopter was fired upon:
The Chinook helicopter flying in front of ours (from the 101st Airborne) took an RPG to the rear rotor, as all four of our low-flying Chinooks took fire. We were forced down and stayed down — for the better (or worse) part of 3 days and 2 nights.