The Supreme Court has repeatedly held, military commissions satisfy the Constitution's due-process requirements. The radical Left refuses to accept this fact - and now the Obama administration is giving them rhetorical ammunition. * A very real safety threat exists when a terrorist like KSM is tried in an urban area: The city becomes an enticing target for terrorists around the world. Holder yesterday claimed that New York City is "hardened" and somehow secured against such terrorism. Yet he seemed to be focused on the courtroom itself. But US marshals' ability to protect the courthouse doesn't mean they can protect the whole city. During the trial, every building in Manhattan becomes a target for the jihadists. They don't need to specifically hit the courthouse to make their point to the world. *Finally, the trial will take many years to complete. Indeed it may not even start for five years or more. Once these terrorists are placed into the civilian justice system, an avalanche of motions from their lawyers will ensue. Military commissions can avoid these delays.