Well, let's see...SWAT = Special Weapons And Tactics...so what special weapons and tactics would we have?
A few (three?) team members each armed with a crossbow of speed (get your AR/15 / M4 Carbine right there). They also have a wand of knock and each a scroll of stinking cloud, a scroll with web and a scroll with hold person (for forcing doors and for non-lethally subduing perps). Each also has an amulet of teleportation. These guys are your front-door men for hostage rescue.
A high INT, high CHA character armed only with a sidearm of some type - maybe a Drowish hand crossbow - with a scroll of persuasion or command (your negotiator).
Definitely someone standing by with potions of healing.
Everyone's armored up in elfin chain - light, durable, and capable of protecting the wearer well. All the aspects of a good Kevlar vest or Interceptor body armor.
A magic-user with shield and ESP (at the least) memorized. Maybe wizard eye and clairaudience as well. He's your electronics man, keeping the situation under control, watching the perps in a standoff situation and relaying information to the rest of the team.
One or possibly two elves armed with longbows and arrows of slaying - there's your sniper team. Give the pair of them a spotter wearing cusps of eyes of the eagle.