Las Vegas resident Erick Silva, is among those killed in the attack on the Route 91 Harvest country music festival. Silva, 21, was stationed in front of the stage at the festival Sunday as part of the show’s security detail. Silva worked security for the Las Vegas branch of CSC for about three years. Gina Argento says when the shooting started, he was among the first of the event’s first responders, helping concertgoers to flee until he, himself, was killed.