NEW YORK (AP) -- If John Miller had scheduled an earlier flight, the CBS News coverage of the Boston Marathon bombing and its aftermath would have been much weaker.
Miller was driving home on the afternoon of April 15 to pick up his wife for their flight to a vacation in Florence, Italy. A phone call alerted him to the bombings and he turned around and headed back to the office, where he's spent much of his time since.
His dual role as a low-key explainer and reporter helped keep CBS ahead on key details of the investigation as the suspects' identities began to emerge, and away from missteps made by other news organizations.
Miller, who appears primarily on "CBS This Morning," reported two days after the bombing that authorities had their eye specifically on someone seen by a store security camera. When Internet sleuths began speculating about potential suspects based on pictures taken at the scene, Miller steered CBS away from them. Miller similarly assured the network it wasn't true when rivals reported erroneously that a suspect had been arrested, said CBS News President David Rhodes.
His bosses knew as much from Miller's demeanor as his words that day. Miller sat calmly in the newsroom eating a sandwich while other news divisions were frantically reporting and unreporting an arrest, Rhodes said.
"One of the main reasons I'm watching CBS' coverage of the Boston story is because of John Miller," said Marcy McGinnis, a former CBS executive who is associate dean of Stony Brook University's journalism school. "I think he's got extraordinary sources. They give him information immediately. The night this (capture of the second suspect) was unfolding, I was in awe."
He's also very measured and clear in his delivery, she said.
Along with reporters, most broadcast news divisions employ analysts, usually former office-holders or experts with an insider's view of how things work. Hero pilot Chesley Sullenberger, who comments on aviation stories for CBS, is an example.
Miller, 54, handles both roles. He's a veteran reporter who worked at ABC News and its New York affiliate. His boss, CBS News Chairman Jeff Fager, calls Miller "one of the best reporters to have ever worked in television." Miller also worked for former New York and Los Angeles police commissioner Bill Bratton when Bratton ran those departments, and at the CIA, FBI and National Security Administration.
By 2011, Miller said he was looking to get back into journalism.
"I had been doing government work for 10 years after 9/11 and it was time to come home," he said.
His long list of contacts was an obvious selling point, and he pitched to Fager an ability to see stories where others wouldn't. His insider's knowledge of law enforcement would also help him identify experts in areas like improvised explosive devices and persuade them to be interviewed by CBS if the moment called for it.
Fager balked at that last point. He wanted Miller to be the person viewers were accustomed to hearing from. If it was a subject beyond what he knew, he could gather the information off-screen so he could talk about it on the air.
No one could have anticipated the rush of stories where Miller's expertise would be vital: the Aurora, Colo., theater shooting; the resignation of CIA Director David Petraeus; the shooting rampage and manhunt for a former Los Angeles police office; the Newtown, Conn., school shootings; and Boston.
Miller's knowledge of police operations enables him to act almost as an interpreter during breaking stories. On the night suspect Dzhokhar Tsarnaev was found hiding in a boat, Miller was able to explain how officials were going about trying to capture him. He knew police would try to stretch it out to make time move more slowly, and he prepared the television audience for this, too.
"It fills the airtime with something other than 'there were shots and we don't know what's going on,'" he said.
Following the Aurora shooting, Miller knew right away the police who would be responding since one of them once worked for him in Brooklyn, Rhodes said.
Miller is hesitant to even call his sources "sources."
"Sources are people you meet on other stories and you develop them into sources of information," he said. "I'm calling friends, and I'm asking them, 'What's happening here?'"
For all their benefits, there's a danger of those relationships getting in the way of his job if authorities are criticized for wrongdoing or failures in their response to situations. Would Miller be able to publicly criticize or question his former colleagues? Host Charlie Rose asked Miller on Thursday about whether the FBI failed to more aggressively follow up on concerns about older brother Tamerlan Tsarnaev's turn to radical Islam.
"20/20 hindsight is going to be brilliant in this case because they're going to go backwards from a bombing reassessing it," Miller replied. He added: "The question is not 'did we do it by the book?' — sure we did — it's 'could we have done it any better if we had dug deeper or looked at something different?'"
Citing his experience at both the FBI and with New York police, Miller on Friday dismissed criticism that the investigators should have told New York that the Tsarnaevs planned to head there with bombs. Times Square security had already been beefed up following the marathon, he said. "This seems like a lot of gnashing of teeth over nonsense," he said.
For all her admiration of his work, McGinnis said she didn't know whether Miller would be able to set aside relationships from his past life in cases where things have not been handled well.
Fager said that such concerns don't hold up if you look at Miller's reporting. "He's tough," Fager said. "He's inquisitive. He'll go anywhere."
For his part, Miller said, "I am reluctant to criticize authorities."
"My interpretation of when they need to be (criticized) and somebody else's might be different," he said. "If you've been there and you know how that works and what it's like, and how easy it is to take potshots from the outside, your criticism is more measured, your analysis of what is worthy of criticism and what isn't is slightly different."
When the bombing story quiets down, Miller will no doubt have another pressing concern: his wife. That vacation.
"I am currently in the correspondent's protection program," he said, "broadcasting under another identity and up at the Holiday Inn here between 9th and 10th (Avenues) until they can negotiate a time when I can go home again."
CBS is a division of CBS Corp.
EDITOR'S NOTE — David Bauder can be reached at dbauder(at)ap.org or on Twitter (at)dbauder. His work can be found at http:bigstory.ap.org/content/david-bauder.