The other day the FBI said they would be once again pursuing the case of DB Cooper. He's the guy who hijacked a plane in 1971, then jumped out of the plane with a large amount of money.
Doesn't the FBI have enough work trying to catch today's criminals and terrorists without having to worry about a 36 year old case on a guy by all accounts probably died when he jumped? If he did live then big deal, he never bothered anyone after that.
FBI worry about now not 37 years ago.