Milt Windler, a NASA flight director who led Mission Control teams during Apollo and Skylab, has died at 94. He was one of four directors who coordinated the round-the-clock effort to bring Apollo 13's crew home safely after an oxygen tank explosion crippled the spacecraft in 1970.
Windler's career illustrates how operations leaders handle uncertainty. On Apollo 13, he and fellow director Gerry Griffin polled flight controllers to develop three options for firing the lunar module's engine to set a return course. During Skylab, he helped invent a real-time flight planning system that let scientists adjust solar observations on short notice, a model for adaptive scheduling under pressure.
After Skylab, Windler worked on space shuttle development and the Canadarm robotic system, then retired from NASA and consulted on International Space Station operations. In a 2006 oral history, he recalled that Apollo's pace left little time for reflection, with one mission immediately followed by preparation for the next. His death was announced in a brief family notice posted online.