If Sen. Rand Paul (R-KY) was acting “irate” during a recent visit to Nashville International Airport, it certainly hid it very well.

After being briefly detained by police officers on Monday, Paul appears to be getting some vindication in the form of a security camera’s video. Although police described him as “being irate” in an incident report, footage published Thursday shows Paul sitting calmly inside an airport checkpoint, and occasionally picking up his phone.

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Paul reportedly set off an alarm on an x-ray machine designed to peer under fliers’ clothing, then refused the more aggressive search. He was briefly detained by local police before being released and re-booking his flight.

Paul has been a longtime critic of the TSA’s invasive search procedures. He told a Senate committee in June, 2011 that the TSA has “gone overboard” with “invasive searches on 6-year-old girls.”

At the time, a TSA spokesman told Raw Story that Paul was not detained, but merely “denied access to the secure gate area.” Paul returned a short time later and flew back to Washington, D.C. without incident. He’s since called for an investigation.

This video is from Nashville International Airport, embedded courtesy of The Tennessean.