A makeshift memorial for the victims of Sunday night's mass shooting stands in Las Vegas.Image: Drew Angerer/Getty Images As the deadliest mass shooting in modern U.S. history unfolded in Las Vegas Sunday night, hundreds of concertgoers like Heather Gooze were forced to watch strangers die right before their eyes. Gooze held one victim in her arms as he took his final breaths. To reach his loved ones, she turned to Siri and Facebook, she told CNN. SEE ALSO: Empire State Building and other global landmarks went dark in honor of Las Vegas victims Gooze was there to comfort 23-year-old Jordan […]