Thirteen counts. "Fort Hood suspect to be charged with premeditated murder," from Fox News via the [1] New York Post, November 12:

Army psychiatrist Major Nidal Hasan will be charged with 13 counts of premeditated murder in last week's Fort Hood mass shootings, a military source told Fox News Thursday.

Hasan, 39, is suspected of killing 13 of his comrades Nov. 5 when he opened fire at a soldier processing center at the Army base in Killeen, Texas....

Hasan is accused of firing about 100 rounds at unsuspecting fellow soldiers filling out deployment paperwork before civilian police officers shot him and stopped the attack....