The government is considering a closed flight deck door policy and armed guards on flights, these two measures will seriously hamper aviation safety. CRM works it enhances safety on all flights to hinder CRM will lead to many more accidents and in the long term to possible greater loss of life than the tragedy in New York. By introducing armed guards or sky marshalls we might as well remove all airport security checks as we will be providing any possible terrorist the hardware they require on board for them.
If you feel as strongly about these issues as I do may I suggest writing to the Home Office or your MP. We all understand the pros and cons of any future measures in aviation safety and this site proves that there is a strong and varied interest, we must ensure that the powers who will make these decisions are aware of all implications of their decisions.