Yes, there truly is a Metropolitan Mosquito Control District

Counting the larvae.

The tall government agent was deep in the reeds this morning, feverishly sampling the waters, looking for clues, working her scoop back and forth, protected only by a pair of sturdy hip waders.

A paid killer with her command vehicle and bucket.
Metropolitan Mosquito Control at your service.

Aha! Larvae. Mosquito larvae. Tons of them, ready to hatch into vile blood suckers. The agent quickly returned to her Mobile Mosquito Control Lab, opened the latch on a steel cabinet and sorted through the ammunition. Soluble pellets mostly -- to be dropped into the water, making it inhabitable for a mosquito hatch without ruining the quality of the water itself.
This has been a good year for mosquitoes in Minnesota. By that we mean we haven't been bitten as many times this year, compared to the number of times we've been bitten in past years.
The agent agreed, said others had told her the same thing. We congratulated her and thanked her for her important work. She nodded with a smile, then quickly returned to her deadly business, disappearing into the dense habitat.
Who was that Everyday Hero? We didn't even get her name.