[ti:] [ar:] [al:] [00:00.00]The United States army [00:02.21]has formally charged the military officer [00:04.14]accused of carrying out last week's mass shooting [00:06.44]at the Fort Hood military base in Texas. [00:08.93]The officer, Major Nidal Malik Hasan, [00:11.54]an army psychiatrist, [00:13.03]has been under armed guard in a hospital [00:14.90]since being wounded in the shooting. [00:16.76]Mathew Prize reports from New York. [00:18.57]There are still many questions [00:20.75]surrounding the mass shooting [00:22.36]at the America's largest military base, [00:24.29]but one of them has now been answered. [00:26.41]Major Nidal Hasan, an army psychiatrist [00:29.14]who was due to be deployed to Afghanistan, [00:31.38]has been charged with 13 counts of murder. [00:34.49]That could rise [00:36.17]if prosecutors decide also to charge him [00:38.16]with the murder of an unborn child [00:40.09]being carried by one of his victims. [00:42.39]He will be prosecuted in a military court. [00:45.13]If convicted, he could face the death penalty, [00:48.30]although no one has actually been executed [00:50.60]under the US military justice system for almost 50 years.