— The Pennington County Sheriff's Office is asking for the public's help finding a federal fugitive wanted by the U.S. Marshals Service after a pursuit today on the east side of Rapid City. Keanu Dillon, 34, is considered armed and dangerous. ADVERTISEMENTDillon is considered armed and dangerous. If you see him or know his whereabouts, contact the Pennington County Sheriff's Office at (605) 394-4131 or call 911 if the situation is urgent.