Cornall was appointed Secretary of the Commonwealth Attorney-General 's Department in 2000 . In the wake of the September 11 terrorist attacks on the United States , the Attorney-General 's Department was responsible for implementing the Howard Government 's national security agenda . The department grew rapidly in numbers under Cornall 's leadership , from 550 staff to over 1500
September 11 terrorist attacks on the United States
September 11 attacks
Robert Cornall