Updated: 'His life made a difference,' Hundreds mourn Atlanta Marine slain in Chattanooga

A U.S. Marine walks out of the visitation of Lance Cpl. Skip Wells, Friday, July 24, 2015, in Kennesaw, Ga. The Georgia Marine gunned down at a Navy-Marine reserve center in Chattanooga, Tenn., will be buried following his funeral Sunday at Georgia National Cemetery in Canton. (AP Photo/David Goldman)

WOODSTOCK, Ga. - A U.S. Marine killed in attacks on military facilities in Tennessee was remembered at his funeral as a dedicated and courageous serviceman who was determined to excel.

Hundreds of mourners filed in to First Baptist Church of Woodstock on Sunday for the funeral of 21-year-old Lance Cpl. Squire Wells, who was known to friends and fellow Marines as "Skip."

"Skip's life, as short as it was, mattered," Senior Pastor Johnny Hunt said. "His life made a difference."

Wells was one of four military personnel killed July 16 when a man opened fire at two military facilities before being killed by police.

Wells attended Sprayberry High School in Cobb County and Georgia Southern University before enlisting.

On Sunday, friends, relatives and residents of the community began filling the parking lot hours ahead of time, The Atlanta Journal-Constitution reported.