9/11heroes - where are they now?

RUDOLPH GIULIANI: New York City’s mayor, Giuliani was hailed as the man who calmed New Yorkers. Since leaving office in January he has been in high demand on the lecture circuit where he’s believed to earn as much as £65,000 per speech. He also has a £2m deal to write two books.

THOMAS VON ESSEN: At the time of the attacks, Thomas Von Essen was commissioner of the New York Fire Department. He left that position in December and has joined Giuliani's firm as a consultant.

He also gives speeches and has written his memoirs, Strong of Heart, which covers his life as a firefighter, union president and finally commissioner.