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"[The flight director] looked at me and shook his head, and I knew they were gone." Gerald Griffin talked to American History TV about what it was like in Mission Control on the day Challenger was lost. This Saturday at 4:30 PM ET on C-SPAN 2, former NASA flight director Gerald Griffin discusses his career in the American space program. He talks about directing Apollo missions along with overseeing the Johnson Space Center in Houston, Texas. | American History TV

Today, we remember the life and legacy of Chris Kraft who joined our Space Task Group in 1958 as our first flight director with responsibilities that immersed him in mission procedures and challenging operational issues. He personally invented new mission planning and control processes. More on his contributions: https://go.nasa.gov/2M7PfLU | NASA - National Aeronautics and Space Administration