In the US, the Air Force Center for Engineering and the Environment (AFCEE) merged with the Air Force Real Property Agency and the Air Force Civil Engineer Support Agency to form the Air Force Civil Engineer Center on 1 October 2012. Before the AFCEE was formed, there was not one centralized office where Air Force commanders could go for assistance with their installation's environmental and construction programs. That situation changed in 1991, when AFCEE was approved and created as a field operating agency of the .