threatened to kill his teacher, other

students, and the school principal. A police officer was called to the school and,

while he and appellant were in the school nurse's office, appellant lunged for the

officer's firearm, and grabbed it by the handle. The officer had to pry appellant's

hand off of the weapon. The officer also learned that appellant had bitten a

teacher on a prior occasion. The police did not take appellant into custody, and

did not file any juvenile charges against him.

      In 2005, appellant engaged in a fight in a high school classroom. The

charges were referred to a juvenile referee for disposition, and appellant

successfully completed a diversionary program.

      While he was in high school, a psychologist prepared a written evaluation

of appellantThe psychologist reported that appellant

was diagnosed with Attention Deficit Hyperactivity Disorder (ADHD) and

Intermittent Explosive Disorder in 1998.       A 1999 evaluation revealed that

appellant suffered from severe ADHD, Expressive Language Disorder, and early

Bipolar Disorder or a primary thought disorder. The report stated that appellant

was "At Risk" in three areas: (1) Attitude to Teachers; (2) Sensation Seeking;

and (3) Hyperactivity.     Appellant reported "a preference for engaging in

behaviors that are generally considered by others as risky, and can be

hazardous," and revealed that he engaged "in a number of restless and disruptive

behaviors."

       In January 2012, appellant was working as a vacuum cleaner salesperson.

He refused to leave a customer's home after a scheduled appointment, and the

customer had to call