2 people arrested for allegedly stealing a plane in Helena Ravalli County Sheriff's Office Kacey Shane Gessner (bottom) and Brittany Rae Treib (top) and last updated 2021-07-26 19:59:48-04 MISSOULA â Two people from the Helena area have been arrested after they allegedly stole a plane that was found abandoned south of Hamilton over the weekend. Ravalli County Sheriff Steve Holton said Kacey Shane Gessner and Brittany Rae Treib were arrested during an investigation into the theft of the plane, which was found on Highway 93 at mile marker 37 near Lick Creek south of Hamilton. Sheriff Holton said a news tip provided information that led to finding and identifying the three occupants of the plane at a Hamilton-area motel Sunday.