Dr Alasdair Conn, Chief of Emergency Services at Massachusetts General Hospital stated that two years ago they asked the Israelis to set up a disaster team that could respond to a mass-casualty event. This prepared them for dealing with the Boston Marathon bombing.
http://www.algemeiner.com/2013/04/15/boston-marathon-blasts-doctor-credits-israelis-with-helping-set-up-disaster-team-video/