Thank goodness for helmets.

They not only protect cyclists in road accidents but the military-issue Kevlar variety can take a hit from a bullet and save a soldier's life.

A video posted onto YouTube a couple of weeks ago by the user Sam Arnold shows a Marine being shot in the helmet as he and his comrades were peaking out from their cover while in Afghanistan.

The bullet cleared by a Marine standing in front and hit the man behind him. The sound of the contact was clear and the Marine's head even dropped back for a second upon impact.

The Marine standing second in line took a sniper bullet to his helmet. (Image source: YouTube)

"A Taliban sniper managed to get a non-fatal headshot on a Marine's helmet while the Marines were conducting a joint helicopter raid in the Now Zad district, Helmand Province in 2013," Arnold wrote in the description of the video posted on Sept. 26.

Watch some of the footage:

After taking the hit, the Marines scrambled back in to a safer area.

"Dude, you got shot," the helmet cam-wearing Marine said.

"I did get shot," the other responded, later noting that his ears were ringing but he was otherwise fine.

Look at the tear where the bullet grazed his helmet. (Image source: YouTube

This Marine was stunned after his helmet took a hit from an enemy sniper and saved his life. (Image source: YouTube)

"Lucky son of a bitch, look at that," one of the Marines said, checking out the top of his helmet.

TheBlaze reached out to Arnold for comment but did not hear back at the time of this posting.

TheBlaze's Tech and Intel Editor Elizabeth Kreft, who served in the U.S. Air Force, reviewed the video and said the cameras look official Department of Defense helmet mounts.

(H/T: Sploid)

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This story has been updated to include a new version of the footage after the YouTube video was removed for an unknown reason.