Right behind you, Rudy. Photo: Robert F. Bukaty/AFP/Getty Images

Speaking at a Trump rally on Wednesday in Ocala, Florida, Rudy Giuliani told a room full of Trump supporters that Hillary Clinton was lying when she said she visited ground zero following the 9/11 attacks.

Rudy Giuliani: "I was there" on 9/11, "I don't remember seeing Hillary Clinton there." https://t.co/iRB09cQ8eH — ABC News Politics (@ABCPolitics) October 12, 2016

Don’t tell me if you said that you remember September 11, 2001, I remember September 11, 2001. Yes, yes, you helped to get benefits for the people who were injured that day. But I heard her say that she was there that day. I was there that day, I don’t remember seeing Hillary Clinton there. That was like when she said she had to run through gunfire. That turned out to be, what do we call it? A lie.

Unfortunately, Giuliani forgot about the internet, and it didn’t take long for pictures to emerge of Hillary visiting ground zero the day after the attacks walking right next to — you guessed it — Rudy Giuliani.

Giuliani, implying Clinton didn't care about 9/11. "I was there. I don't remember seeing Hillary Clinton."

DUDE, SHE'S RIGHT THERE... pic.twitter.com/bXbbCMhVBI — Joanne Harris (@Joannechocolat) October 12, 2016

Here is a picture of Rudy Giuliani and Hillary Clinton walking together through NYC post-9/11, after Clinton had flown back from DC pic.twitter.com/03gKLAwlQJ — Jose A. Del Real (@jdelreal) October 12, 2016

After the image went viral, and just a few hours after making the original accusation, Giuliani walked back his claims and apologized, saying, “I made a mistake. I’m wrong and I apologize.”

Technically, Clinton wasn’t present in New York on September 11 — though she never claimed to be. She represented New York as a senator on 9/11 and was in Washington, D.C. when the attacks took place; she returned to New York and toured ground zero with Giuliani the next day.