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So why did the Mike Pence J6 Cover-up Committee interview this | Ivan E Raiklin 🇺🇸 ☝🏽

So why did the Mike Pence J6 Cover-up Committee interview this unnamed person? Can someone help me identify who it is? Full name, please. https://www.govinfo.gov/content/pkg/GPO-J6-TRANSCRIPT-CTRL0000083773/pdf/GPO-J6-TRANSCRIPT-CTRL0000083773.pdf