According to today's NewsReal, United plans on strengthening "the cockpit doors on           
56 of its Boeing 777s and B767-300 aircraft as a result of the incident involving UA Flight 855 two weeks ago."

According to Captain Hank Krakowski, their Vice-President of Corporate Safety, Security and Quality Assurance (try fitting that title on a business card!), "These modifications will further prevent a cockpit intrusion, and will enhance the safety and security of our flight crews and passengers."

Further prevent?  Wasn't the prevention of cockpit intrusions the reason for reinforcing all the doors the first time around?   Well anyway...United will 'further prevent' cockpit intrusions by reinforcing the upper and lower portions of the door frames with a locking capability that, in their own words, "will make the door impenetrable."

The cockpit door strengthening on those aircraft should be completed within the next two weeks.