Complex sentence: When looking into the origins of this wind security in the Superdome, CNN reported that no engineering study had ever been completed on the amount of wind the structure can withstand; the building's engineering study was underway as Hurricane Katrina approached and was put on hold.
Split into simpler sentences: When looking into the origins of this wind security in the Superdome, CNN reported that no engineering study had ever been completed on the amount of wind the structure can withstand. The building's engineering study was underway as Hurricane Katrina approached and was put on hold.