The Nimrod MRA4 is one of the so called 'toxic projects' being hugely late and over budget. As a lesson in what not to do they are brilliant but we must be. ... This will result in blog entries that disagree with each other but that it fine , debate is good. Where we are incorrect (and it will happen, probably a lot) just let us know, review and correction strengthen the quality of posts. Finally, it's just a blog, so don't take it too seriously! ...