Difference between the three "swat" alarm and response categories

SWAT on it's own will mobilise either a SWAT armoured Vehicle or an SUV.

SWAT would just mobilise the nearest SWAT resource (regardless as to if its a Armoured Vehicle, or SUV), whereas the other two options let you choose which you want in particular.

I remember not too long ago where I suggested we could decide the number of personnel on a call instead of vehicles. This would be very helpful and less confusing if we did it this way.