Police/army/swat bug

Im not sure if this is supposed to happen, but when im attacking a building (any building) the cops will go into the building and not move until i destroy it.

And also, when a team-ate gets the swat team or army called in on them when i do, the swat and army will just walk past me even if i shoot at them. They won't fire until they kill the first guy they were going after.

So here is how the wanted system works...

When you have 4 stars:
10 S.W.A.T. members are called down to the map
They only target players with 4 stars

When you have 5 stars:
10 Army members are called down to the map
They only target players with 5 stars

Only 10 of the Swat and Army can be on the map at any time

So if don't have a high wanted level the swat/army will not hurt you.

Do you think that the swat/army should always be hostile to players with any wanted level?
Or I could just make it so if you harm a swat/army member your wanted level automatically goes up drastically to where they will hurt you?

Whats your thoughts?

Make them hunt for those who have fitting wanted level, but allow them to hit back if they were hit. if you hit them twice, then they hit you twice and so on.

I think if you have 3 or more stars they will attack you if their on the map or if you attack them.

Cops now go to the location of the attacking unit rather than the attacked unit now.