AP-South Dakota stories for September 1 and September 3. Members using Exchange stories should retain bylines and newspaper credit lines. If you have questions, please contact the desk at 605-332-3111.

For use Saturday, September 1, and thereafter.

EXCHANGE-HELICOPTER CRASH ANNIVERSARY

SIOUX FALLS, S.D. — South Dakota residents reflect on a Sioux Valley helicopter crash on the 20th anniversary of the tragedy. In Aug, 20, 1998, the Trauma One chopper from Sioux Valley Hospital crashed. Investigators later learned a poorly fitted pin caused the rotor blade to swing into the tail of the Bell 222 helicopter, sending it crashing into a soybean field near its destination of Spencer, 110 miles southeast of Sioux Falls. By Stu Whitney, Argus Leader. SENT IN ADVANCE: 1970 words.

EXCHANGE-HISTORIC HANGAR

YANKTON, S.D. — Yankton officials decided this summer that it was time to spruce up the barrel hangar at Chan Gurney Municipal Airport. The structure, which dates back to World War II, will get a new roof and all new windows on the north side. The 75-year-old building had two different layers of roofing on it, neither of which was keeping out the weather any longer. By Cora Van Olson, Yankton Daily Press & Dakotan. SENT IN ADVANCE: 609 words.

For use Monday, September 3, and thereafter.

EXCHANGE-NATIONAL PARK NONPROFIT

RAPID CITY, S.D. — A newly formed nonprofit aims to support South Dakota's Badlands National Park. Despite drawing approximately 1 million visitors annually, the park has lacked the support that some other popular national parks receive from nonprofit organizations known as "friends groups." The Badlands National Park Conservancy aims to change that. The conservancy filed its South Dakota incorporation papers in May and is awaiting approval of its application for federal tax-exempt status. By Seth Tupper, Rapid City Journal. SENT IN ADVANCE: 389 words.

EXCHANGE-SIOUX FALLS STREETS

SIOUX FALLS, S.D. — While the city of Sioux Falls reviews street names selections, only very rarely would they reject a name proposed by developers, who have broad powers to pick the names that define neighborhoods. Once developers pick street names, they run them past city officials for review. They make sure the name doesn't duplicate an existing street name, isn't derogatory, doesn't sound too similar to an existing street name and has no more than 13 characters. By Jeremy Fugleberg, Argus Leader. SENT IN ADVANCE: 1126 words.