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Insitu Chief Executive Sliwa Retiring April 1

BINGEN, Wash. (AP) - The chief executive of Insitu plans to retire April 1 after 10 years with the Bingen, Wash.-based company that makes unmanned aircraft.

The Oregonian reports that Steve Sliwa expanded the company to more than 700 workers, reaching $128 million in annual sales in 2008, when Boeing acquired it as a subsidiary.

Company spokeswoman Jill Vacek says Insitu plans to hire a replacement soon.

The company was founded in 1994. It has developed and produced aircraft such as the ScanEagle, a 40-pound aircraft used for surveillance, search and rescue, mapping, mineral exploration and research.

Insitu has said it's looking for a Columbia Gorge site to consolidate some of its 20-plus Gorge-area locations into a single corporate campus.