Well to be honest, of the Military forces attacking Isis is dangerous and so is not doing it. I would say attacking Isis is 95% better than not because what if people ended up getting injured again.
B) gruff kindness - hope this helps!
The entire ship's crew is vulnerable and scared, and Rainsford is saying it's all just imagination but everyone is susceptible
when a person does not get enough sleep there mind begins to "trick" them into thinking thing are happening when they are not or in other words hallucinations. this can happen when the person does not get enough food as well, but to the events of the story the most likely would be the lack of getting enough sleep, because in you dreams you are only thinking without a filter.
so the answers are hallucinations and inability to sleep