Guard Hall,Operations Chief of "mission control" at NASA's Jet Propulsion Laboratory (JPL). He is seen in the Network Operations Control Center,the mission control room. Hall is responsible for real-time management of the Deep Space Network,NASA's wordwide tracking & communications complex which sends commands to & acquires data from plan- etary spacecraft. Among other missions,Hall (born 1948) was "Ops Chief" for the Voyager Project. Launched in 1977,the two Voyager craft acquired images & scientific data from encounters with Jupiter,Saturn,Uranus,Neptune & their moons. This portrait was taken in August 1989,at the time of Voyager 2's encounter with Neptune |