The door slammed shut because the wind will be blowing. idk if im just stupid or not but i think this is the answer
The piece of equipment that saves his life is in fact his woven mail shirt.
(Sources: http://csis.pace.edu/grendel/projf981d/analysis.html)
C
Explanation: it just is
The business survival skills of the 1930s quickly gave way to a new form of leadership that tested the limit of America's ingenuity, productivity, and compassion.
