[1][2] In high school, Jung was a star football player and was described by his classmates as "a natural leader",[2] but was charged by an undercover police officer for solicitation of prostitution.

[1] After graduating in 1961 from Weymouth High School, Jung briefly attended the University of Southern Mississippi, where he considered studying advertising, but dropped out.

In 1967, after meeting with a childhood friend, Jung realized the enormous profit potential represented by smuggling the cannabis he bought in California back to New England.

[2] In search of even greater profits, he expanded his operation to flying the drugs in from Puerto Vallarta, Mexico,[2] using airplanes stolen from private airports on Cape Cod[3] and professional pilots.

[4] After arguing with the judge about the purpose of sending a man to prison "for crossing an imaginary line with a bunch of plants",[3] Jung was sent to the Federal Correctional Institution, Danbury.

[5] When they were released in 1976, Jung and Lehder smuggled large quantities of cocaine into the United States by joining forces with Pablo Escobar, and they made millions of dollars.