Last month Naval aviation officials publicly announced the service's newest tactical aircraft, the F/A-18E/F Super Hornet, had cleared its final operational testing hurdle and was ready for fleet introduction. But the Super Hornet will have to clear one more obstacle before it begins the next chapter in naval aviation history -- an assessment of its effect on the environment. In a Federal Register notice issued today, the Navy announced it was preparing a Super Hornet environmental impact statement "to evaluate...