FORT MYERS (CBSMiami) — A Florida man has been fired from his job as an insurance agent after a videotaped tirade inside a Costco store went viral.

The video posted Monday on Twitter shows a man wearing flip-flops and a red T-shirt emblazoned with “Running the world since 1776” shouting in the store after reportedly being asked why he was not wearing a face covering, as required at all Costco locations.

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Screaming “I feel threatened,” “back off,” and worse, the man lurched in a menacing manner towards an employee who came to the aid of an elderly woman who had asked about his lack of a face covering.

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The altercation happened on June 26 at the store at Gulf Coast Town Center in Fort Myers Costco and involved a man later identified by multiple news outlets as Daniel Maples, an insurance agent for Ted Todd Insurance.

The insurance company posted a tweet, disavowing the behavior shown in the videotape and saying the “former employee” had been fired.

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In a separate post, Charley Todd, CEO of the insurance company, wrote that “threatening behavior and intimidation go against our core mission to be trusted advisors in our community. We are also committed to immediately reviewing our internal existing culture.”