Posted in Web ‘Charming’ D.B. Cooper suspect Sheridan Peterson dies at … October 8, 2021 Sheridan Peterson, long considered a suspect in the D.B. Cooper skyjacking case, died Jan. 8 in northern California, according to memorials website Legacy.com.He was 94. https://www.oregonlive.com/history/2021/01/charming-db-cooper-suspect-sheridan-peterson-dies-at-94-spent-years-dedicated-to-political-causes.html