[autopov]

The psychological challenges are interesting.

Psychiatrists and psychologists often need to vent to a peer to deal with being the person who counsels others.

I imagine or hope that some cross training is performed in the sMARS mission so that one person who is incapacitated doesn't create a cascade of other problems (e.g., the French biologist can't attend to the life-sustaining Cyanobacteria).

A crew member suffering a mental breakdown could doom the mission. Is her medical kit stocked with sedatives? Does increased radiation exposure alter brain structure?

So many risks that we know of and some that we don't.