You might be using private browsing or have notifications blocked. Please enable notifications or using normal browsing mode. KKR won't "do anything that would make anybody worry" now that it is the majority owner of the Ronkonkoma-based vitamin maker, said David Rubenstein of the Carlyle Group, which previously owned the LI firm. David Rubenstein, co-founder of the private equity firm Carlyle Group, speaks with journalist Megan Murphy in Washington Friday about Ronkonkoma-based vitamin maker Nature's Bounty.