Patty Horan said that after six months, her husband knew only seven words, and it took him about a year to speak in full sentences.
He had to relearn how to walk, too, and had been using a wheelchair. Now he walks with a brace and has a service dog -- a black Lab named Wilson -- for balance, his wife said.
Aiello said the best part of working on projects with veterans like Patrick Horan is their humility.
"I have two small children, and I look at them and I look at the freedoms they have," said Aiello. "And it gets me choked up because of heroes like Patrick," Aiello said. "He doesn't even know."