The mystery of D.B Cooper is one of the most intriguing unsolved mysteries in the world. But what many don't know, is that in April of 1972, just 6 months later, Richard McCoy Jr. from Provo hijacked a plane from Denver. He demanded 4 parachutes and $500,0000. Many speculate and some are even convinced that McCoy wasn't a copycat hijacker, but D.B. Cooper himself. 

https://www.newspapers.com/image/643477721/?terms=richard%20floyd%20mccoy&match=1

https://en.wikipedia.org/wiki/Richard_McCoy_Jr.

https://www.fbi.gov/history/famous-cases/richard-floyd-mccoy-jr

https://www.newspapers.com/image/596608969

https://screenrant.com/d-b-cooper-hbo-documentary-richard-floyd-mccoy-leaves-out/