From the safety of her hotel room overlooking the concert venue she escaped from, Tamm described the chaos.
"People were screaming and running in every direction. There were so many shots. It felt like it was never going to end. We kind of knew the direction the shots were coming from, but we didn't know if people were on the ground shooting, or where exactly they were," she said. "I remember wondering if it was better to get up and run or stay down. There were people covering other people, and hovering together."
She and her friend decided to make a run for it.
"I turned around to look back, and I could just see bright flashes of lights," Tamm said. "I found out later those were the bullets hitting the stage and metal."
Tamm and her friend first took cover behind a bar table, then below a staircase, under a police car, and finally behind a neighboring building. That's where Tamm pulled out her phone.
"I was able to send a text message to my family," she said. "I just wanted to tell them I love them. Just in case."
Soon after, a security guard escorted them into a hotel nearby. They stayed there on lockdown for seven hours with dozens of others.
"A couple of girls we talked to said their friend was hit, and they had to leave her," Tamm said. "Some others couldn't get in touch with their loved ones. It just doesn't make any sense at all. I can't help thinking about all the lives that were lost, and the people who were injured."