It’s a bombshell development in a 45-year-old cold case mystery. A commercial airplane hijacker escaped with a daring parachute jump in 1971 and was never seen again. A team of private investigators says it has cracked a code that it says shows the infamous hijacker who went by the name D.B. Cooper is, in fact, a man who lives in San Diego named Robert Rackstraw. Rackstraw is a former Stockton resident, whose family also lived in Calaveras County.