Bruce Melnick, vice president of Boeing Florida Operations, is retiring effective April 1, Boeing Co. announced March 29.

Melnick, a former NASA astronaut and space shuttle flight engineer, led Boeing’s Florida team for more than 10 years. The unit provides engineering, facilities and maintenance support to NASA and the U.S. Department of Defense for the space shuttle, International Space Station and Delta rocket programs.

John Elbon, Boeing Space Exploration’s vice president and Constellation program manager, has been named acting Florida site senior executive.