Vitkovic then ran down the stairs to level 11, firing indiscriminately. He stormed into the computer training centre, shooting Michael McGuire at point-blank range, killing him. He then moved to the north-east corner of the office floor, cornering several office workers at their desks. Marianne Van Ewyk, Catherine Dowling and Rodney Brown were fatally shot in that area, some while hiding under their desks. Three other workers were wounded there. Several victims were shot in the head at very close range as they attempted to hide. A male office worker, Donald McElroy (who had been shot once), and Tony Gioia tackled Vitkovic, while Frank Carmody, who had been shot several times, wrestled the rifle from him. Gioia and Carmody were later awarded Australia's second-highest bravery decoration, the Star of Courage. A wounded female worker, Rosemary Spiteri, took the rifle and hid it in a refrigerator.