Stop bleeding should be first priority once cover is reached. The most preventable cause of death in combat is bleeding. Learn combat basic combat first aid and carry a blow out kit.
A basic rule I found to be true: What you get out of the car with is what you have for the fight. If you carry light or carry the wrong gear you will know it.
Do you do situational training at your department? Can you get them to offer some IDPA type stages? Most cops would think it fun and it might just stimulate some brain cells.
My rifle and pistol are tools, I am the weapon.