15 years on, few of us can erase the unbelievable images of New York City's World Trade Centre collapsing on the dreadful day of 11th September, 2001. But how many of us knew that Rick Rescorla, a security employee for major corporate firm Morgan Stanley at the Twin Towers had indeed predicted and raised concerns over a terrorist attack of this very nature, not only once, but twice? Rick Rescorla saved an unbelievable number of 2,687 people’s lives on September 11. As a jumbo