Usually, cats get ignored in raids, or maybe kicked aside. Normally not shot.
A trained cat could do a lot of damage to a human, with claws and needle teeth that could go through kevlar like it was nothing, but hardly anyone has the patience to train them.
An angry or berserk cat is a force to be reckoned with! I had one who had fits of rage due to brain damage; he sent my mom to the ER to have her wrist sewn back together and pumped full of antibiotics, nearly blinded me and gave a series of wounds that left one leg stiff and tender for 6 months.
Yes, we had to put him to sleep. Trying to deal with a cat in killer mode is going to be a painful, messy affair.
A trained guard/protection cat is an interesting idea...