So Trayvon's last words were, "You got me!"

[X_Digger]

64. Center of mass (physics) is below the navel on men, even lower on women.

'Center Mass' to a cop is right at the top of the Xiphoid process (that bit of cartilage at the bottom of your breastbone).

Cops aren't trained to shoot below someone's navel.

http://www.policeone.com/Officer-Safety/articles/3468112-Shooting-center-mass-Shooting-to-kill-or-to-stop/

[div class='excerpt']“Center mass. It’s ‘operations central’ for your body, houses your heart, a most important muscle that sends blood to all parts of your frame. Your lungs are also here and they are necessary for the balanced exchange of oxygen and carbon dioxide. You got nerves, lots of nerves that pass through center mass. The vagus nerve for instance represents the golden highway of neurological life sustaining information between your brain and vital organs. This nerve is the master switch for heart rate and blood pressure. Turn off that switch, empty the pump of blood or puncture a lung and a person is likely to die—quickly. This folks is where we are going to put our bullets.”
...
“Two shots to the body, center mass...follow it with one to the head. The use of a firearm is deadly force, folks and your shots need to stop the threat. Remember, the ultimate responsibility for taking another human life is yours. No one else can make that decision for you. You have to be prepared both physically and mentally. To stop a deadly threat you have to know when and where to shoot. I want to see good target placement and a tight group on your chest shots. Are there any questions? OK... Is the line ready? The line is ready... on the command... draw and fire!”