Given that the OP's location is given as sunny Florida it could very well be Miami PD SWAT that he's referring to. Given that more drugs flow through that place than Rite-Aid, they probably feel the need for plenty of firepower.
If they are that necessary then the citizenry should have the same level of access to the same level of firepower.
Another example of the mileage the .gov is getting out of the "War on Drugs".
.44 Special: For those who get it, no explanation is necessary. For those who don't, no explanation is possible.