June 12 is a day that will long live on in infamy, 29-year-old Omar Mateen opening fire in Orlando nightclub Pulse and killing 49 people.

Now officials have released some of the 911 calls they received in the early hours, and as you can imagine it doesn’t make for easy listening.

The distress calls don’t need much of an introduction, but here’s more information on the calls from ABC:

In one 911 call, a man says his girlfriend is at Pulse, where she is hiding in a bathroom and sending him texts.

“There’s like 18 people, two are dead, they’re in the bathroom,” the man says. “They’re all scared to death, they all think they’re gonna die”…

Another woman tells a dispatcher her 20-year-old brother is in the bathroom.

Another caller says her brother is in a Pulse bathroom with about 20 other people. She says her brother told her, “There’s two dead people.”

Another caller says his friend is at Pulse. He says the friend said he was shot in the bathroom and no one sees him.

You can find a collection of all the calls released to the public HERE, but below is a summary from CBS:

Unimaginable fear.

[sources:abcnews&cbs]