They are sometimes referred to as "God's Marines" or the church's "storm troopers" - a band of priests and missionaries who live sparse lives and are willing to accept religious orders anywhere in the world, sometimes living in extreme conditions.

The order elects its own leader, known colloquially as the Black Pope because of the black vestments worn by the Jesuits, at a conclave in Rome, where members from around the world gather to make their choice. The current leader is Father Adolfo Nicolás, of Spain.

[link to copycateffect.blogspot.com]