The gunman suspected of targeting U.S. military service members during a mass shooting Friday in Tennessee was a 24-year-old electrical engineer who had grown up in Chattanooga as part of a conservative Muslim family.
Mohammad Youssef Abdulazeez was born in Kuwait but moved with his family to the United Statesas an infant after the start of the Persian Gulf War and became a U.S. citizen, according to accounts given by friends and one of his sisters.
He attended Red Bank High School, just outside Chattanooga, north of the Tennessee River. His senior yearbook entry featured two photographs of him - clean-shaven with close-cropped hair - alongside a prophetic quotation: "My name causes national security alerts. What does yours do?"
In high school, Abdulazeez was active as a wrestler, competing in the 189-pound weight class. He later fought briefly on the mixed martial-arts circuit, training at the Chattanooga Fight Factory, a local gym. A video of one cage fight from 2009 shows him pummeling a middleweight from Shelbyville, Tenn., winning in the second round on a technical knockout.
After graduating from high school, Abdulazeez remained in the area, earning his engineering degree from the University of Tennessee at Chattanooga in 2012.
His family was rooted in the community of Hixson, a Chattanooga suburb. His father, Youssef, was employed by Chattanooga's public works department.
A sister, Dalia, taught fourth grade at Woodmore Elementary School. In 2009, the staff and student body surprised her with a school-wide assembly to celebrate her naturalization as a U.S. citizen, singing "My Country, 'Tis of Thee."
Visa Harper, former principal at Woodmore High School, remembered Dalia Abdulazeez as a highly competent and sweet young woman who wore Muslim headscarves and loose-fitting, modest clothing. She so impressed her sponsor teachers during her student teaching year that Harper hired her to teach fourth grade.
Law enforcement officers surround a house in Tennessee. Photo / AP
A few years later, however, the young teacher surprised Harper by saying she would have to resign for personal reasons.
"When she was about to leave, she mentioned a dilemma with the guy she wanted to marry. Her parents didn't approve," Harper said. "She was leaving the country and going with him. She didn't care what her parents said."
"I got the sense [her parents] were very religious," Harper added. "I got the sense they wanted to pick who she would marry."
Another sister, Yasmeen, drew attention at Red Bank High School and the University of Tennessee at Chattanooga for proudly wearing a traditional Muslim head scarf in the classroom and on the volleyball court.
Yasmeen told the Chattanooga Free Press in 2010 that some students harassed her, but that she wasn't afraid to confront people about their attitudes toward her religious beliefs
"I'm not afraid to go straight toward them and ask them, 'Do you really know what Islam is?'" she said. "There's this misconception that Islam is a violent religion. Muslims are actually peaceful."
According to a resume he posted online, Abdulazeez held engineering internships with the Tennessee Valley Authority and at least two private firms.
A few months before Thursday's shootings, he had another scrape with the law. In April, he was charged with driving under the influence in Chattanooga, according to court records. A booking photo from the arrest shows him with a half-smile and a fully grown beard.
He was scheduled to appear in court on July 30.
Abdul Baasit, the imam at the Islamic Society of Greater Chattanooga, said he saw Abdulazeez recently at the mosque during Ramadan. "I am still trying to gather myself," he said. "I am just blown away."
