Editing D. B. Cooper (section)

===Hair samples===

FBI agents found two hair samples in Cooper's seat: a single strand of limb hair on the seat, and a single strand of brown Caucasian head hair on the headrest.{{sfn|Gray|2011b|pp=93}} The limb hair was destroyed after the FBI Crime Laboratory determined the sample lacked enough unique microscopic characteristics to be useful.{{r|vault_66|quote= "the limb hair possesses too few unique microscopic characteristics to be of value..."|page= 233}} However, the FBI Crime Laboratory determined the head hair was suitable for future comparison, and preserved the hair on a microscope slide.{{r|vault_66|quote= "The head hair clipping is suitable for significant comparison results."|page= 233}} During their attempts to build Cooper's DNA profile in 2002, the FBI discovered the hair sample had been lost.{{r|vault_52|page= 62}}