One of those riders is Armstrong's former teammate George Hincapie, who Armstrong once said was like a brother to him. Hincapie has never been tainted by scandal. He rode next to Armstrong in all seven Tour de France victories.
But now we're told that Hincapie, for the first time, has told federal investigators that he and Armstrong supplied each other with the blood booster EPO and discussed having used testosterone, another banned substance, during their preparation for races.
Through his attorney, Hincapie declined to be interviewed, citing the ongoing investigation.
"Is it just a bunch of guys making decisions on their own about what they want to do? Or is this a doping program that was directed for the rest of the team?" Pelley asked Tyler Hamilton.
"You know, the team really encouraged it," he replied.
"The team management?" Pelley asked.
"The team management encouraged it, yes," Hamilton said.
The team at the time was managed by Johan Bruyneel and Hamilton says some of the team doctors supervised the doping. He's not the only member of the team to tell us that doping on U.S. Postal was both directed and systematic.
We spoke to a former team member who did not want to be named. But he said that he was instructed by some team doctors to use EPO and that Armstrong recommended he use the banned steroid cortisone before time trials. Neither Bruyneel nor the team doctors we contacted wanted to comment. Prosecutors are investigating which of the team's managers or doctors may have been involved in illicit doping.
"Was Lance Armstrong encouraging the doping?" Pelley asked Hamilton.
"He obviously was the biggest rider in the team and he helped to call the shots. Yes, he doped himself, you know, like everybody else but he was just being part of the culture of the sport. But yeah, I mean, he was the leader of the team and he expected for going in, for example the '99 Tour, which was his first tour that he won we were gonna do everything possible to help Lance win. We had one objective, that's it," Hamilton said.
It was in that 1999 Tour de France that Hamilton says Armstrong used another drug called "Andriol."
"Basically Andriol is just in a little red pill, but basically what's inside is just oil, a special oil. Another way to take it was just you'd get a little, like, eyedropper thing and you'd have a little glass container of it. I saw him take it that way, too, with me, you know," Hamilton said.
"And that oil was what?" Pelley asked.
"Testosterone," Hamilton said.
"Another banned substance?" Pelley asked.
"Correct," Hamilton replied.
Asked if they did this together, Hamilton said, "I remember one time after a race getting a drop of oil from him, you know, he put it, just squirt it in my mouth, squirted in a teammate's mouth and squirted it in his own mouth, you know. Just a tiny amount, enough that's not gonna be detectable the next day when you get drug tested."
Hamilton told us that doping was happening on the U.S. Postal Service team before Armstrong joined. The best riders got special treatment.
"I remember seeing some of the stronger guys in the team getting handed these white lunch bags," Hamilton remembered. "So finally I, you know, started puttin' two and two together and you know, basically there were doping products in those white lunch bags."
"You weren't getting one in the beginning?" Pelley asked.
"No," Hamilton said.
But he told Pelley that eventually he did get one of those bags.