LA Metro plans to hire 300 unarmed “transit ambassadors” to help riders navigate the system and keep an eye on passengers and employees. Will more bodies ease safety concerns on the system? Fresh off her Grammy win, Arooj Aftab returns to LA to headline the final performance in The Broad Museum’s summer series “Now We’re Here.” The history of great jazz on South LA’s Central Avenue is celebrated in the latest concert by MUSE/IQUE, a nonprofit performing arts organization.