That's the sound of a sport shaking up communities across the U.S.

Class. Communities like Arlington, Virginia, which is just a couple of miles south of our studios here in Washington, D.C.

Most mornings you'll find dozens of pickleball players on the court at the Walter Reed Recreation Center in Arlington.

Barbara Smith is one of the many newcomers to the sport who fallen in love with the record game.

It's great to get me out of the house, introduce me to new people, get me moving.

I'm the people I see here, we regularly make dates to meet and play pickleball together.

More than 36 million Americans played pickleball last year.

That's according to the Association of Pickleball Professionals.

And it's the fastest growing sport in America according to the APP.

Many of you have joined in on the fun.

I started playing about two months ago because I wanted to find ways to stay active as I got into my 50s.

Really the only things I'd heard about pickleball were that old people played it and that people who played tennis and used tennis courts really hated it.

And it's been great to do, found it to a group of friends.

As I started playing it, I really understood why it's so popular.

It's very accessible.

The learning curve compared to something like tennis is much smaller.

So it's really easy to get a grasp of.

It is an unexplainable addiction and a good one at that.

Thanks for those messages.

But not everyone is a pickleball fan.

In cities across the country, there are fights over the noise it makes and the public space it takes.

There's also a lot of money to be made.

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