Rob good to know you know the mind of the assassin. I am putting you on the no fly list.
However, they plan on killing not being killed, until they run out of ammo or blow something up. They retreat when confronted like all bullies, you can see that not only in this case but in all others. Yes stress comes but adrenaline can conquer it, And you analogy is true that once you miss a deer through a mistake you don’t do it again. I can tell you they are taking one side of the argument, I am pointing another. It is all speculative.
NSAIDS have antipyretic activity and can be used to treat fever.   Fever is caused by elevated levels of prostaglandin E2 , which alters the firing rate of neurons within the hypothalamus that control thermoregulation.   Antipyretics work by inhibiting the enzyme COX, which causes the general inhibition of prostanoid biosynthesis ( PGE2 ) within the hypothalamus .   PGE2 signals to the hypothalamus to increase the body's thermal set point.   Ibuprofen has been shown more effective as an antipyretic than paracetamol (acetaminophen).   Arachidonic acid is the precursor substrate for cyclooxygenase leading to the production of prostaglandins F, D & E.