If you read the article you can see that he is referring to the Caravans at FLOAT. Here's the relevant part;
Eventually, McKinney says he hopes to vertically integrate the pilot pipeline between Ravn, Northern Pacific and FLOAT Shuttle, another one of his aviation ventures.

“So you’ll have from the right seat of a [Cessna] Caravan to the left seat of a Boeing going international, a one-stop shop for your whole career and we’ll be kind of our, our own pilot mill.”