He seemed to have come to some sort of decision.

After all, they knew what kind of decision he had to make.

He got to his feet with an air of decision.

They looked at each other and came to some sort of decision.

He sat a moment, then got up with an air of decision.

He wanted them to believe in his process of thought and decision.

I now needed to make some sort of a decision.

They could be dead within minutes of such a decision.

What would be the effect of my decision on others?

He asked me not to question him about the reason of his decision.