chloe melas is with us. tell us about this emotional exhibit. >> reporter: good morning, mika.this sprawling 50,000-square-foot space is being spearheaded by scooter braun. braun and some of the survivors who i spoke with say this installation is not about religion or politics, but a moment to raise awareness about the attack at the music festival, to remember the lives lost and hostages that were taken, a warning some images and details may be disturbing. >> everywhere you turn your head to, you see the smiles. you see happy people. >> reporter: reflections of smiling faces dancing. people living their best lives. >> i was really, really excited for it. it was amazing. >> reporter: the moment music stood still is an exhibit that recreates those moments in vivid detail from the dirt on the ground, to festival music echoing through this 50,000-square-foot space in lower manhattan. >> people come up to you out of nowhere and start talking to you like you're family. that was very special to me. >> reporter: a fun-loving event that took a terrifying turn when the festival was targe