On today’s program: Interim Pittsburgh Public Schools Superintendent Wayne Walters, whose appointment is for a year, talks about building trust among families as the district searches for a permanent replacement; a Post-Gazette investigation found more than half of apartment complexes managed by the city’s Housing Authority failed their latest federal inspections; and a PNC Bank survey of small and mid-sized businesses nationwide found owners and managers are optimistic about the future, particularly those with vaccinated employees.