The guy in that ad, is former marine, Mark "Oz" Geist, who served in Benghazi as a private military contractor. He also co-wrote the book, 13 Hours, on the events of that fateful night, which was then adapted into the Michael Bay directed film of the same name, released earlier this year.
As you can tell in the ad, Geist is not a fan of Hillary Clinton. Why? Because he holds her personally responsible for allowing Ambassador Stevens and three other brave Americans to die that day.
(Though, for some reason, the ad displays hundreds of graves even though just four people died that night. Maybe he and the NRA just decided it would be easier to round up).
This wouldn't have been that noteworthy if it wasn't for the fact that Geist had been far less critical of Hillary back when he had a book and movie to sell. Here he was on ABC News in January:
But while many of Clinton's enemies use Benghazi to hold her accountable, Geist has his own perspective.“Do I hold her accountable? No. You know who I hold accountable is al-Sharia,” he said. “That’s who attacked them. That’s who killed the ambassador.”
Well, isn't that interesting? In fact, he's done plenty of interviews where he insisted that he has no beef with Hillary. Here's one where he's interviewed on Vegas Film Critic (skip to 2:42):
"Never a political thing". Imagine that. Even when he was on Hannity, and the Fox News host tried to prod him to admitting that he thought Hillary orchestrated the whole thing, he was only able to muster some incredibly mild and mealy mouthed criticism (skip to 4:24):
VFC: Now when this movie originally came out there was so much debate about where the politics lie in this movie, and I was glad to see there was no politics in this movie. It's just a story about heroes. Did you have many meetings to keep this movie neutral at all times?
Geist: You know it was pretty much never really discussed after the very beginning, and if you've read the book, anybody out there'll know it was never a political thing. It's about honoring four Americans that gave their lives and also honoring those that served this country.
Furthermore, I have to point out how Geist's accusations of Hillary also happen to fly in the face of what both the 13 Hours book and movie primarily blame on the failure to save Ambassador Stevens. That scapegoat isn't Hillary, but the callous bureaucrat that was the CIA station chief in Benghazi. The station chief is the one who gave Geist and his comrades the infamous "stand down" order, after all. I haven't read the book, but in the movie, there's no direct reference to either Hillary or Obama.
So why did he decide to hop on board the KILLARY train?
Simple. All the apolitical tact and decorum was before Bayghazi flopped in theaters. After that, it seems Geist realized there was no longer any incentive to remain on good behavior and decided to go full wing nut. Hence, his participation in the anti-Hillary ad in question.
Be prepared to see more of this grifter as he travels the wing nut welfare circuit in the coming months.