Working as a subcontractor to Leidos (formerly SAIC), PRO has completed partial cultural resource surveys at the following Air Force or Air National Guard facilities in accordance with Section 110 of the National Historic Preservation Act:
Altus Air Force Base (2013)
Altus, Oklahoma
Grand Forks Air Force Base (2010)
Grand Forks, North Dakota
Homestead Air Reserve Base (2018)
Homestead, Florida
Horsham Air Guard Station (2011)
Horsham, Pennsylvania
McConnell Air Force Base (2013)
Wichita, Kansas
Scott Air Force Base (2010)
Mascoutah, Illinois
Vandenberg Air Force Base (2018)
Lompoc, California
The survey reports have led to concurrence reviews with State Historic Preservation Offices in seven different states.