Sexton was born in Manhattan, New York, on December 28, 1981, to Jane Buckman Hickey and Mason Speed Sexton,[4] a Wall Street financier. Buck attended Saint David’s School and graduated from Regis High School, before earning a bachelor’s degree in political science from Amherst College.
Sexton is a former Central Intelligence Agency officer first joining as an analyst in 2005. His assignments included the Al Qaeda-focused Counterterrorism Center (CTC) and the Office of Iraqi Analysis.[5]
In 2011, he joined TheBlaze as a national security editor and later worked as a contributor. He eventually became a permanent anchor there.[6] Sexton has filled in for Rush Limbaugh, Sean Hannity, and Glenn Beck.