On February 1, 2003, Space Shuttle Columbia broke apart during re-entry, killing all seven astronauts aboard. This film traces the decisions and warning signs that preceded the disaster, from the piece of foam insulation that struck the wing during launch to the internal debates among NASA engineers about whether the damage was survivable. Interviews and archival footage lay out how the shuttle program's safety culture had absorbed earlier near-misses without forcing real change, and how launch pressures and cost concerns shaped what got investigated and what got waved through. The film reconstructs the final minutes of re-entry using flight data and mission control communications, showing how quickly a known risk turned into a catastrophic failure. It also places Columbia alongside Challenger seventeen years earlier, asking why a second shuttle was lost to a problem the agency had been told about in advance. The result is a plain account of how institutional habits, not just hardware, can turn a spacecraft into what the title calls a human time bomb.