What does Sascha remember about Nic's behavior before he went to Pueblo?

As Sascha drives to Pueblo, she remembers how Nic was taking 43 pills a day for pain, anxiety, depression, and nightmares before he went to the treatment program. He was having flashbacks and thrashing around in his sleep. He slept walked into closets looking for his rifle. He was not able to tell her what had happened during the war.