Outpost from the documentary “Restrepo.” (Tim Hetherington; Restrepo)

Adam Ferguson, a war photographer, spoke about his experience trailing the soldiers in Afghanistan in the photography magazine VII last month.

“War is boring,” he says. “Days waiting, watching, listening. I’ve spent that much time listening, that I’ve come to know the sound of my own heart and the different beats it can take.”

His story is one of the long moments of “boredom, then an awkward, filthy violence, then boredom.”

What can the young men and women at war do to fill that nothing, that stillness? For one group of eight, their role is to fill that silence with plenty of noise.

The video of the band Sidewinder covering the Adele song “Rolling in the Deep” comes courtesy of an anonymous Twitter feed run by a man who goes by the Twitter handle @areyousuprised. He says he’s stationed in a “Sandbox, Middle East” and he uses his Twitter feed and YouTube videos to “build up the courage to come out to family, girlfriend, friends, and coworkers,” once “don’t ask, don’t tell” ends. It’s not clear whether he’s one of the members of the band, but he did sent the video into a viral tailspin he hadn’t quite expected. “My latest video is getting blown up like crazy,” he wrote.

The band members did not expect it either. Staff Sgt. Angie Johnson, of the 571st Air Force Band, 131st Bomb Wing, Air National Guard, only found out about the viral video when Carson Daly contacted her on Twitter. In short order, Mark Burnett and NBC’s the Voice reached out as well. “ Totally can't believe I'm tweeting with you right now. Jaw.On.Floor,” Johnson wrote.

I can believe it. The band has an incredible sound on par with the original songstress Adele. Watch it: