We no longer have a civilian-led government. The most unnerving legacy of the Bush administration is the encroachment of the Department of Defense into a striking number of aspects of civilian government. Our Constitution is at risk. President-elect Barack Obama's selections of James L. Jones, a retired four-star Marine general, to be his national security adviser and, it appears, retired Navy Adm. Dennis C. Blair to be his director of national intelligence ... could complete the silent military coup d'etat that has been steadily gaining ground below the radar screen of most Americans and the media. While serving the State Department in several senior capacities over the past four years, I witnessed firsthand the quiet, de facto military takeover of much of the U.S. government. The first assault on civilian government occurred in faraway places -- Iraq and Afghanistan. As military officers sought to take over the role played by civilian development experts abroad, Pentagon bureaucrats quietly populated the National Security Council and the State Department with their own personnel ... to ensure that the Defense Department could keep an eye on its rival agencies. The encroachment within America's borders continued with the military's increased involvement in domestic surveillance and its attempts to usurp the role of the federal courts in reviewing detainee cases. The Pentagon also resisted ceding any authority over its extensive intelligence operations to the ... director of national intelligence. Now the Pentagon has drawn up plans to deploy 20,000 U.S. soldiers inside our borders by 2011.