These losses were staggering": Destruction from Iowa's derecho still lingers one year later

Trees flattened. Homes leveled. Critical infrastructure to the region's agriculture industry destroyed. One year after a derecho, known as an "inland hurricane," roared through Iowa, destruction still lingers. 

"Every time a storm comes through it's PTSD," said Iowa's State Climatologist Justin Glisan.  In 14 hours, the sustained line of storms covered 770 miles, moved from Nebraska to Ohio, causing more than $11 billion in damages and killing four people. It was the most devastating thunderstorm in American history.