Italian Americans from opposite coasts – Salceto from Philadelphia, Ferrari from San Francisco – the two became close, almost like brothers, after being assigned to the same unit during the Korean War. When Ferrari died, it hit Salceto hard.

"After that, I never let anyone get close to me like I did with Dave," he says. "I couldn't; I didn't want to go through that again."

When the war ended, Salceto wanted to tell Ferrari's family how brave their son and brother had been in battle. Most of all, he wanted to salute his friend at his gravesite and give him a proper farewell.

For decades, though, Salceto had no luck finding his final resting place or locating any of his relatives. Then, in June of this year, he uncovered a clue that led him to the Italian Cemetary in Colma, California, where Ferrari is buried.

Within days, Salceto, who lives in Franklinville, New Jersey, was packed and sitting aboard United Flight 731 from Philadelphia to San Francisco with his wife, Amy, and daughter, Donna Decker, on his way to Colma. For such a meaningful trip, he even wore his Army dress uniform.

That's how San Francisco-based flight attendant Noreen Baldwin spotted him as he walked down the jet bridge to get on the plane.

"I saw him and said to the other crew members, 'Oh my goodness, look at this guy,'" she says. "I knew there had to be a story."

The two struck up a conversation and Salceto told Baldwin why he was traveling. She got emotional listening to him talk and made a point of fussing over him, making sure he and his family had everything they needed.

About halfway through the flight, Baldwin had an idea. She and her fellow crew members would write messages of encouragement to Salceto and invite his fellow passengers to do the same.

"We did it discreetly," says Baldwin. "I asked the customers if they saw the man in uniform, which most had, and asked them if they wanted to write a few words for him on a cocktail napkin. A lot of people did; families did it together, parents got their kids to write something. After the first few rows, I was so choked up that I could barely talk."

When Baldwin surprised Salceto with dozens of hand-written notes, he, too, was speechless. He laid the stack on his lap and read each one. At the same time, the pilots made an announcement about the veteran over the loud speaker, after which the customers on board burst into applause.

"It seems contrived, and I hate using the word organic, but that's what it was; it just happened," Baldwin says. "Mr. Salceto was so loveable and humble, and what he was doing was so incredible, it felt like the right thing to do. And you could tell he was touched."

On June 27, Salceto finally stood before Ferrari's grave and said that long-awaited goodbye. As a trumpeter played "Taps," he unpinned a medal from his jacket and laid it reverently on the headstone.

"I had gotten a Bronze Star for my actions [the night Ferrari died] with a 'V' for valor, and that was the medal I put on Dave's grave," says Salceto, pausing to fight back tears. "I thought he was more deserving of it than I was."

For the first time in years, Salceto felt at peace. His mission was accomplished.