Planes over water

AIR FORCE PHOTOS

Green Roof

Phil Chase monitors Sedum plants on the vegetative rooftop of the 21st Space Wing headquarters building at Peterson Air Force Base, Colo. Heat is redirected through the plants instead of the rooftop, cooling the inside of the building. The building's roof is about 67 degrees cooler than the nearby 21st Mission Support Group building. Mr. Chase is the solid waste and hazardous materials program manager for the 21st Civil Engineer Squadron Asset Management Flight. (U.S. Air Force photo/Thea Skinner)

PHOTO BY: Unknown
VIRIN: 090715-F-0180S-2005.JPG
FULL SIZE: 2.62 MB
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