Photo by Rafahh via Flickr One firefighter has died at an explosion near LAX this afternoon. Check here for updates.Terminal One was evacuated early this morning after security screeners saw something that resembled a grenade, prompting a near 40-minute evacuation of the Southwest Airlines terminal. After officials identified it as a toy grenade, operations went back to normal. LAX officials told KNBC that passengers should be reminded "not to pack anything that resembles a......