Air Force Holding Exercise in Northern Plains Training Area

RAPID CITY, SD. (AP) — The Air Force is holding a training session this week in the massive Powder River Training Complex over the Northern Plains.

The three-day Combat Raider exercise runs through Thursday. It involves several different types of military aircraft, including bombers, fighters and cargo planes.

The 35,000-square-mile complex over the Dakotas, Montana and Wyoming is the largest over the continental U.S. It’s been in use for four years. Large-scale exercises are limited to 10 days per year.