Until the 1990s, federal agencies often maintained an inhouse facilities engineering organization, comprised in part of architects and engineers, responsible for both the technical aspects and the oversight of the planning and design phases of the acquisition process.
The federal agents are deeply trained in maintaining in house facilities. 
mnli hypothesis: The federal agents are deeply trained in maintaining in house facilities.  premise: Until the 1990s, federal agencies often maintained an inhouse facilities engineering organization, comprised in part of architects and engineers, responsible for both the technical aspects and the oversight of the planning and design phases of the acquisition process.