Combat pilot, 42, entering GOP presidential race, promises American 'turnaround,' homeland defense at borders

David Stuckenberg campaigning as Republican, will be in Iowa within days

David Stuckenberg has flown more than a 150 combat missions.

In just days, the 42-year-old Air Force Reserve major with a key role in the Texas Air National Guard, an entrepreneur who focuses on water scarcity, is entering the Republican presidential nominating contest with a blend of old-school conservatism and what he says will be a nimble, youthful ap…