It’s been a year since Ray Britain lay on the floor of the Inland Regional Center in San Bernardino, Calif., feeling the vibrations of the gun shots.

He remembers that “constant tremble,” he says, the ringing in his ears, the shell casings — “a rainbow of shell casings” — flying from the gun, and the looks of shock on his coworkers’ faces.

It’s been a year since Britain survived what was then considered the deadliest terrorist attack in the United States since the Sept. 11, 2001, attacks: Fourteen people killed and 22 wounded. But he can remember all of it like it was yesterday.

“The dreams keep a lot of it real,” Britain says. “There’re certain things I wish I could just forget, but unfortunately, they just keep popping up.”

San Bernardino Shooting’s Signs Have Faded, But Memories Remain Piercing

Photos: Nathan Rott/NPR