Casper was thinking deeply about what to do. His head was starting to get achy, and again he got restless inside.
For the others, the soldier seemed to be very composed, and it lessened the anxiety in their hearts. As long as Casper continued showing that everything was under control, they felt like they needed just to keep struggling and obeying his orders.
Nobody had decided that Casper was the leader. Since the start, he himself had rejected that position and said that he would act as an equal with the others. However, his personality, his actions, and the ability he had to always lead people to his goals no matter how serious was the situation, were points that made everyone around him try to follow him.
Olaf and Alfar themselves had not realized they were acting that way towards him, and just in that little break they got into that Search block they noticed that matter.