Read this: In addition to military efforts abroad, in the aftermath of 9/11 the Bush Administration increased domestic efforts to prevent future attacks. Various government bureaucracies that handled security and military functions were reorganized. A new cabinet-level agency called the United States Department of Homeland Security was created in November 2002 to lead and coordinate the largest reorganization of the U.S. federal government since the consolidation of the armed forces into the Department of Defense.[citation needed]
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): What other massive agency's creation was the DHS compared to?
the Department of Defense