(I, II, III, IV) Ground Zero Workers

What do we owe to the people who risked their lives at Ground Zero on Sept. 11th? Many of them are now ill as a result of the work they did there.

Useful links:
http://cnn.netscape.cnn.com/news/story.jsp?floc=FF-APO-1500&idq=/ff/story/0001%2F20031028%2F215736678.htm&sc=1500&photoid=20030928XMA101