That Australia has not suffered a successful terrorist attack on its aviation industry is testament to the resilience of our security system.
As many as one in 50 people are face blind, meaning they can't tell one face from another.
The deadly terror attack in Brussels raises the issue of safety and security at airports. But this is more about our approach to risk in any areas where people are known to gather.
Legislative and managerial weaknesses that exist in Australian airports mean we should not be complacent.