In looking up this organization with the Attorney General's office in Illinois, I discovered that 80% of the money goes to pay for fund raising, and no where on their tax return does it show money going to the disabled firefighters. Which tells me basically that they are doing little to no good.
Check it out for yourself in the link below.
http://ag.state.il.us/PDF_IMAGES/Indexes20100625/01015889-2009.pdf