Of Course i think 1990s SWAT Uniforms are also good option, too. i just want to Suggest something like 'Retro style(Old Type Uniform, Headgears like Cap and Old Type Helmets, Old Type Body Armors)' as a one of the Possible Operator Customization for Player and Teammate. ;)
Oh BTW i also found this another 'Retro style' Old SWAT Team Photo. (Harrisonburg Police Department SWAT - Ref : https://sites.google.com/site/harrisonburgpoliceswat/about-us
)