SWAT Videos
 

Normally I'd say this would be Off-topic but I think given the wide varying of SWAT uniforms and people's questions about their tactics and weapons, it should be here.

Some good SWAT Videos showing uniforms and tactics
YouTube - SBPD SWAT - San Bernadino PD
http://www.youtube.com/watch?v=5FL6v8p5UtU - Dallas SWAT
YouTube - SWAT VIDEO - A mix Sheriff and PD
YouTube - SWAT LAPD - LAPD

Add more if you find some good ones!

this one seems like a good reference:
YouTube - SWAT Team Rescue