The effort to build a memorial tribute to the victims of the 9-11 disaster
at the former WTC site (see www.buildthememorial.org). 

FEMA's official news pronouncement explaining their participation in the 9-11 relief efforts
(see www.fema.gov/news/newsrelease.fema?id=5674).

Robert's official FEMA ID issued to New York State licensed health care professionals
who volunteered their services for the 9-11 emergency relief efforts

T

he Wikipedia's comprehensive overview on the events of 9-11.