Boeing [BA] subsidiary Insitu could release its ScanEagle 2 unmanned aerial vehicle (UAV) in 2016, according to a senior company official.Insitu ScanEagle Product Line Director Don Williamson told Defense Daily Tuesday the company’s follow-up to its popular ScanEagle UAV was in the final development stages. Williamson said a highlight of ScanEagle 2 will be its clean sheet-designed, two-stroke engine created by Australia’s Orbital, which Insitu selected from among 52 companies in a global search to design ScanEagle 2’s engine.Williamson said…