The fourth annual CooperCon from 10 a.m. to 4 p.m. Nov. 18-20 features three days of presentations, discussions and socializing at the Kiggins Theatre, 1011 Main St., Vancouver. Hear from first-hand witnesses of the infamous skyjacking, listen to experts on the case, learn about cutting-edge scientific discoveries that may lead to the case being solved soon, see artifacts from the skyjacking–including some of the ransom money found buried along the Columbia River in 1980–and meet personalities from Netflix, History Channel, and Discovery Channel shows about the DB Cooper mystery. Tickets are $39 to $99.