This seems to be a declarative sentence. It talks about the reaction of the policeman to a specific thing. His expression is not pleasant. What he might saw is something not good and something to worry about. Other possible thing could be there an heinous crime scene that he faced at that moment. It depends on the situation.<span />
        
             
        
        
        
the sentence that is being used in both excerpt are logos. The use of the logos appeal here is to give a reason to support and explain her purpose
Both use an appeal to logos by providing a reason to support her purpose.
 
        
             
        
        
        
A pure future is when you are certain of that what you’re are going to do