The best time to perform any significant work on a school building is when school is out, but that was not possible in the case of Rome High School in Georgia.

The Department of Defense is learning how to transform some of its 577,500 buildings and structures into state-of-art, energy-saving powerhouses.

There are acres and acres of metal roofing systems, many up to 50 years old, which have recently become in need of some maintenance.