"As a supervisor, I am aware of the job performance of people coming into our organization, that is part of our credentialing process, " Kesling said.

CNN: STORY HIGHLIGHTS

Kimberly Kesling, deputy commander of Clinical Services for Darnell Medical Center at Fort Hood and Hasan's supervisor at the post, told reporters last week that Hasan was doing a good job in Texas.

CNN: STORY HIGHLIGHTS

Colonel Kimberly Kesling, deputy commander of clinical services for the medical centre at Fort Hood, said that she had never had any indication that he dreaded his planned deployment to Afghanistan later this month.

ECONOMIST: The killings at Fort Hood