FDNY Mobile Health Unit

[firebuffkevin]

http://www.google.com/imgres?um=1&hl=en&sa=N&biw=1280&bih=649&tbm=isch&tbnid=tvIqeDxVgugjNM:&imgrefurl=http://x635photos.com/displayimage-random-16--964.html&docid=wdhJmha_L9CwLM&itg=1&imgurl=http://x635photos.com/albums/userpics/normal_FDNYTypeII.jpg&w=650&h=583&ei=eZBiT5PPO4Tr0QHD4LGLCA&zoom=1&iact=hc&vpx=178&vpy=142&dur=2747&hovh=213&hovw=237&tx=140&ty=101&sig=112394121571167785338&page=1&tbnh=143&tbnw=156&start=0&ndsp=18&ved=1t:429,r:0,s:0

What is this unit for?