DETROIT -

The Detroit RiverFront Conservancy has arranged a special celebration Friday as part of the launch of its annual Detroit River Days Festival.

Fifteen former Tuskegee Airmen are expected to attend the event at GM Plaza at the Renaissance Center.

A B-17 bomber from World War II is to depart from Willow Run Airport and make three flyovers during the ceremony.

And a presentation is to be made by Mayor Dave Bing.

The Tuskegee Airmen were members of an African-American air unit, the Tuskegee, Ala.-based 332nd Fighter Group.

They served at a time when the U.S. military practiced rigid racial segregation, denying blacks most promotional opportunities.