**Chapter 1: The Call**

The sun was setting over the bustling streets of Los Angeles, casting a golden glow over the city as Captain Bobby Nash and his team responded to a routine traffic accident on a busy highway. The sound of sirens filled the air as the team, consisting of paramedics and firefighters, rushed to the scene to help those in need. Bobby, being the experienced captain that he was, took charge, directing his team with precision and care. As they were finishing up, a massive semi-truck drove over a weakened bridge, causing it to collapse with a deafening crash. The sound of screams and crunching metal filled the air as the bridge crumbled beneath the truck's wheels. Bobby's instincts kicked in, and he immediately jumped into action to help rescue those trapped. "Dispatch, this is Engine 51. We have a multiple vehicle accident with a bridge collapse. Requesting backup and rescue units," Bobby's voice came over the radio, calm and authoritative. At the 9-1-1 dispatch center, Maddie Buckley, Bobby's daughter, and her team started receiving frantic calls about the bridge collapse. The room was filled with the sound of ringing phones and panicked voices. "911, what's your emergency?" Maddie answered, her voice firm and reassuring. "There's been a bridge collapse on the highway! Oh my god, people are trapped!" a frantic voice replied. Maddie's eyes widened as she quickly relayed the information to her team. "We have a bridge collapse on the highway. Multiple calls are coming in. Buck, Evan, we need you to get over there now." Buck, Evan, and Maddie quickly sprang into action, grabbing their gear and racing out to their truck. As they sped towards the scene, the dispatch center continued to receive calls, each one more urgent than the last. Meanwhile, Bobby was assessing the situation, his trained eyes scanning the wreckage for anyone in need of help. He directed his team to start rescuing those trapped, but in the chaos, he got pinned beneath a large chunk of concrete and steel. The weight was crushing, and Bobby's vision began to blur. "Athena, I...I don't know what's happening," Bobby thought, his mind foggy. Unbeknownst to Bobby, his wife, Sargent Athena Grant, was at the LAPD, working a shift. She was about to receive a call that would change everything. The dispatcher's voice came over the radio, "LAPD, we have a report of a bridge collapse on the highway. Possible multiple injuries and fatalities." Athena's heart skipped a beat as she listened to the dispatcher's words, a sense of foreboding washing over her. She had a feeling that this was going to be a long and terrible night.