Between $2008$ and $2013$ American Predator drones $-$ remote controlled, unmanned aircraft armed with missiles$-$killed upwards of $3,000$ suspected terrorists in Afghanistan, Pakistan, and Yemen. The most controversial target has been Islamist cleric Anwar al$-$Awlaki, who failed to survive a drone strike in Yemen on September $30,2011.$ Awlaki had been linked to more than a dozen terrorist operations, including a plot to blow up cargo airplanes bound for the United States. He was also a United States citizen. Because of Awlaki's citizenship, critics argued that his death by drone attack was illegal, given that the U$.$S$.$ Constitution forbids the execution of American citizens without due process of law. Legal expert Glenn Greenwald noted that there had been no effort to charge Awlaki with committing any crime, and he had not been afforded a trial to prove his innocence. $"[$Awlaki$]$ was simply ordered killed by the president: his judge, jury and executioner," Greenwald said.

If Awlaki were to have been charged with terrorist activities, as an enemy combatant where would his case be heard?