Whilst having sympathy with Mike Jenvey's obvious, and laudable desire to keep guns or stun weapons off the flight deck because it is 'dangerous', I cannot help but cast a weather eye to the dedicated 'professionals' out there who, unhappily and for reasons best know only to themselves are going to dedicate their lives to comandeering a plane full of passengers and use it to create a massive and very destructive point.
They will use all their power and ingenuity to achieve this and at some stage one/some of them may succeed. Without going into statistics which are reasonably malleable instruments in the right hands, we can take Mike's approach and leave it to the various layers of security already in place or the problem can be looked into and various solutions considered and proposed.
It does sound as though in the US the problem is being adressed. Whether it is going to be successful or not, remains to be seen, BUT, at least the problem is being studied and something is being attempted.
Doubt will have been created in the minds of whoever is approaching that cockpit door that there may be something lethal behind it.
It may only be a small beginning, but to my mind something is better than nothing Mike.