Macrae credits the Australian army with developing the technique of slapping a sticky bomb directly onto a tank instead of throwing it from a relatively safe distance.[34] Since the bomb used a blast effect, it was safe to do this and walk away provided only that the bomb's handle was pointing away from the bomber – the handle would be shot away from the explosion "like a bullet."[34] Macrae gives no date for the development of this tactic. Macrae confirmed that placing the bomb rather than throwing it gives better adhesion and allows thicker plates to be penetrated.[27]