Brantley Gilbert treated fans attending the Chattanooga Unite: A Tribute on the River benefit concert on Wednesday (Sept. 16) to a packed set, but one of the highlights was an emotional performance of "One Hell of an Amen."

The event honored those killed during the shootings at a military recruiting center and Navy-Marine training center in Chattanooga, Tenn., in July. It was held on the two-month anniversary of the tragic day, specifically in tribute to U.S. Marine Gunnery Sgt. Thomas Sullivan, U.S Marine Staff Sgt. David Wyatt, U.S. Marine Sgt. Carson Holmquist, U.S. Marine Lance Corporal Skip Wells and U.S. Navy Petty Officer Randall Smith, whose lives were taken during the shootings. The concert was a grand event -- and Gilbert believes that the fallen five deserve a big gesture.

"It started off really small as an intimate, acoustic event," he says, "and as the thought process and time went along, we just thought the families and community deserved a more grand gesture."

Gilbert had a special meet and greet with the families who lost loved ones, and throughout the evening, a few family members were even invited onstage. At the end of Gilbert's performance of "One Hell of an Amen," he recited those five special names and offered a moment of remembrance.

"Put your finger in the air one time," he told the crowd. "Tell 'em you love 'em, that you miss 'em, and we'll see 'em again soon. God bless y'all, Chattanooga."

The event also included performances from Trace Adkins, Colt Ford and Aaron Lewis, all of whom performed with a giant American flag stretching across the length of the stage.

Gilbert announced the benefit on July 20, just days after the shootings took place.

"It pissed me off,” Gilbert says of the shootings, “but at the same time, I want do everything I can just to see if I can reach out and help these families a little bit, add my condolences to the families and all the people in Chattanooga … We can’t ever give ‘em back [their loved ones], but maybe we can give ‘em a little something.”

Samuel L. Jackson hosted the event, which also included a parade, a memorial service, a church choir, a Blue Angels flyover, a performance by Harry Connick Jr. and fireworks to end the night.

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