From left: Chicago Police Department Supt. David Brown, Department of Public Health Comm. Allison Arwady and Ald. Jeanette Taylor speak during Friday’s committee hearing.

The leaders of Chicago’s police department, parks system and public school district have plenty of ideas in place to quell an expected wave of summer violence, and no shortage of funding to turn them into reality, they told aldermen Friday. But the City Council was skeptical on Friday that the institutions have the staffing power and the communication prowess to execute.

The council convened a joint hearing of its committees on public safety, education, health and special events to probe senior officials from the Chicago Police Department, Chicago Park District and Chicago Public Schools about their plans to keep young residents safe this summer. The special Friday afternoon meeting lasted more than three hours.