One answer
Swat wear armour because...
You have to be quick to kill someone with gun.It's hard to hit
exactly in the knee or head or arm-you will have to actually aim.
However,just pointing at someone's huge chest and pulling trigger
will likely kill someone.Basicly,swat guy will spend less time aiming
at some body part-he'll just go for torso,big and easy to hit.
The other guy will be dead by the time he finally gets good aim at
swat's guy's head or knee.Firefights dont last long.It's about who
kills the other guy first,not,"will you HANG ON I'M TRYINA TAKE OUT YOUR KNEE?!"
It's just questions,you shoulda actually added pictures for each question.=D