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This is the true story of the legendary Vietnam War hero John Ripley, who braved intense enemy fire to destroy a strategic bridge and stall a major North Vietnamese invasion into the South in April 1972. Told by a fellow Marine, the account lays bare Ripley's innermost thoughts as he rigged 500 pounds of explosives by hand-walking the beams beneath ...

Bold Endeavors: Lessons from Polar and Space Exploration presents the results of 15 years of research for NASA and the Department of Defense concerning the factors that contribute to adjustment and sustained human performance under conditions of isolation and confinement. The research involved the study of previous space operations and conditions on Earth, such as submarines, Antarctic stations, polar expeditions ...