Daniel Psenny, who lives in the 11th arrondissement directly behind the Bataclan, was working in his apartment when the first shots were fired.
Initially unsure what had happened, Psenny began to film the scene from his second-floor window.
But when he saw victims laying helplessly in the street, Psenny realized how serious the situation was and decided to help the injured find safety.
This is his story (translated from French):
I was trying to work. The TV was on, it was playing a film in which Jean-Hugues Anglade plays a police officer. I heard a noise like firecrackers, and at first, I thought it was in the film. But the noise was loud, so I went to the window. I live on the second floor, and my apartment overlooks the Bataclan's emergency exits…. I saw people on the floor, blood… I understood then that this was something serious. I asked what was happening, [but] everyone was running towards Rue Amelot and Boulevard Voltaire. A woman was clinging to the Bataclan window on the second floor. It reminded me of the images of the September 11th attacks. I [yelled out my window] and said I would go down to open [the door] so [the victims] could come take refuge. [When] I opened the door of the building, there was a man lying on the sidewalk… I must have gotten shot at that time, I do not know, [I'm drawing a blank]. But I remember having felt [something] like a firecracker exploding on my left arm, and I saw that it was [bleeding profusely]. I think it was fired from a window in the Bataclan. We went up to a couple of neighbors on the fourth floor. One had been shot in the leg, he was an American. He was vomiting and shivering; we believed he would die. We called the fire department, but they couldn't evacuate us. So I called a doctor friend, and he taught me how to make a tourniquet with my shirt. And we stayed there until the assault was over and RAID came to find us.
Psenny was transported to the Georges-Pompidou hospital in Paris' 15th arrondissement early Saturday morning, Le Monde reports. He remains hospitalized, awaiting surgery.
See Psenny's terrifying footage below.