The four U.S. Marines murdered in Thursday's attacks on Tennessee recruiting stations have been identified by their local communities and press reports.

Gunnery Sgt. Thomas J. Sullivan, 40, Lance Cpl. Skip Wells, 21, Sgt. Carson Holmquist, 27, and Staff Sgt. David Wyatt, 37, died when Mohammad Youssef Abdulazeez fired multiple rounds Thursday at their reserve center in Chattanooga, Tenn.

Sullivan was from Springfield, Mass., and had served multiple tours in Iraq.

"Tommy's mother, Betty, and father, Jerry, were equally shell-shocked," reported Friday. "His sister, Dianne, and her family were among those who gathered at the family home in Hampden to make sense of the tragedy."

Wells was a 2012 graduate of Sprayberry High School in Marietta, Ga., and his classmates took to the school's alumni Facebook page to honor their lost classmate. Wells' mother was also a graduate of the high school, according to the group.

Holmquist lived in Jacksonville, N.C., with his wife, Jasmine, and young son.

Sgt. Carson Holmquist and his family

The Tennessean reported that Wyatt, a father of two who lived in Chattanooga with his wife, Lorri, was also one of the Marines killed.