The mystery of D.B. Cooper
FBI Special Agent Robbie Burroughs with a parachute recently discovered partially buried in a familys field in southwest Washington state. It was located almost exactly at the midpoint of a line drawn between the two spots that authorities think D.B. Cooper could have landed. (Kevin P. Casey / Associated Press)
A serial number and the date Feb. 21, 1946, were stamped on the parachute found in Washington state. The FBI, with the help of parachute experts, determined that the parachute had no connection to the D.B. Cooper case. (Kevin P. Casey / Associated Press)
Some of the $20 bills that were given to hijacker D.B. Cooper. The money was found by a boy on the banks of the Columbia River in 1980. It is the sole link to the only unsolved airline hijacking in U.S. history. (Nick Ut / Associated Press)
