/Soldier from Sanibel among four killed in helicopter crash1 / 4 This undated photo released by the U.S. Army shows chief warrant officer Andrew Kraus. (U.S. Army via AP) 3 / 4 This undated photo released by the U.S. Army shows chief warrant officer Andrew Cully. The helicopter was on a routine flight training west of Joint Base Lewis-McChord, according to the U.S. Army Special Operations Command. The regiment’s mission is to organize, equip and employ Army special operations aviation forces around the world, according to the Army’s website. They were all part of the Army’s 160th Special Operations Aviation Regiment based at Fort Campbell, Kentucky.