Leaders are Responsible as they look after and lead others. Thus, ALL the responsibilities of the others are also his responsibility as a another aspect of the leader's job is to make sure the group's work goes smoothly. Knowing this, it is obvious that the leader has to be very responsible.
Leaders are also humble as they lead people and most people will only listen to people they respect. If the Leader as every other trait needed to be a Leader but is not humble everyone would not listen to him and in the end, not do the work as well as they could have done. Overall, Humility would earn him respect from the others he is leading and the others would do their jobs well regarding listening to others.
Leaders are situationally aware(SA) as well. When the group is in trouble, the leader must be aware of it first. Also, they must find a way out of it. Thus, they need to be smart as well. "A leader is one who sees more than others see, who sees farther than others see, and who sees before others see." a wise man(Leroy Eimes) once said. The quote is further proof of my point. Seeing further is seeing the problem, seeing before others see is seeing it ahead of time and seeing more is seeing the solution.
A leader would get out of a crisis by using the trust of the people he needs and his SA and smarts to get out.