VA Secretary David Shulkin chosen as designated survivor

PHOTO: Vice President Mike Pence, left, and Rep. Tim Walz, right, applaud as Veterans Affairs Secretary David Shulkin speaks during his swearing-in ceremony, Feb. 14, 2017, in Eisenhower Executive Office Building on the White House complex in Washington.PlayCarolyn Kaster/AP Photo
WATCH David Shulkin: Everything You Need to Know

Secretary of Veterans Affairs David Shulkin has been selected as tonight's designated survivor, according to a senior administration official.

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Shulkin will be moved to an undisclosed location during President Donald Trump's speech tonight to a joint session of Congress on Capitol Hill.

Typically chosen by the president's chief-of-staff, the designated survivor would be left to run the country if a disaster were to wipe out the entire presidential line of succession.

According to historians, picking a designated survivor dates back to the 1960s, when the nation was afraid of a nuclear attack.