Flying boulder kills elderly sisters

(KFOR) An Oklahoma family is forever changed after two sisters tragically lost their lives when a large boulder went through the windshield of the SUV in Pauls Valley Tuesday.

83-year-old Flora Perkins and her 89-year-old sister, Wanda Oliver, were killed instantly in the accident. Their niece, 66-year-old Norma Caldwell, was driving the car and was remarkably uninjured.

The Oklahoma Highway Patrol says the basketball-sized rock weighed about 40 to 50 pounds, and fell out of a semi-truck traveling in the opposite direction.

Investigators say the crash could have been prevented if the rock was properly secured.

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