Most of the time, fast and light are what work.
When you start talking about static defense then the plate carriers and tacos and junk start to make sense.
Having gone where angels fear to tread, my “rolling gear” was a great deal lighter and simpler than anyone else I worked with.
My 5-11 push pack contained an additional 4 30 round mags, binoculars, a bottle of water, a doorstop, a small bottle of CLP, a small flat pry bar, a spare set of batteries for the lights and some gorilla tape.
I already had @100 rounds of pistol Ammo on me