The U.S. Army Corps of Engineers Los Angeles District begin a remedial investigation and feasibility study July 13 at the former Sahuarita Air Force Range in Pima County, Arizona. Kyle Lindsay, a geophysicist from the Sacramento District and Sara Benovic, a project manager with the State of Arizona Department of Environmental Quality Federal Projects Team, discuss the RI/FS that will investigate more than 10,000 acres using digital geophysical mapping. Airmen from Davis-Monthan in Tucson used the site from 1943 to 1958 for bombing and gunnery training.