I read with interest that the United States Congress have been asked to reconsider the the concept of arming pilots with hand guns as a preventative measure against hijack attempts. 

As I understand it, a program called the Federal Flight Deck Officer Program begun in 2003, authorises some US airline crew members to carry fire arms on board in order to defend the aircraft against acts of criminal violence or hijacks.  The contemplation of such a program is understandable after the dreadful 9/11 attacks and other security issues which confront western countries today.  Apparently, the program was not supported at the time by the US Tranportation Security Agency who opposed arming pilots.  I suspect that agency has a reputation as a strong and vigourous defender of transport security.  Notwithstanding, the program was initiated and has operated since 2003.

Recently, a US Airways pilot who is a member of the program accidently discharged his firearm while flying an Airbus 319 from Denver to Charlotte.  Apparently no harm was done, although I suspect that he was not too popular with his fellow crew members.

The danger of an errant round damaging some critical aircraft component, or harming an innocent crew member or passenger, is quite real.  Pilots particularly need to be aware of the old adage, "Aviate, Navigate and Communicate", when confronted with a crisis regardless of its nature.  Confrontation is very dangerous, and may close the door to any other options if they indeed exist.   

Better prevention measures and strategies are the key, rather than a last stand on the flight deck.

Although this idea was probably considered in Australia, it has never been raised by government agencies, so I asume that it was rejected.  I hope that it stays rejected, because, apart from every other logical argument, I know too many pilots called - Murphy!