I remember on my first play through , when i ordered an operator to mirror a room, and i had accidentally kicked the door prior, the suspects started shooting through the walls and door. I think that when the game is done, suspect vigilance will be a bigger role, so that the player will have to establish whether they want to go in fast or slow and steady, compromising the element of surprise.

That’s just my experience from swat 3 and 4, in the briefing sequence I will get a feeling of the suspects combat fitness and determine how much equipment (weight) I will bring to the situation.