After five y 
ears of war in Syria, Aleppo&#39 ;s remaining resi de
nts prepare themselves for a s iege. Khalid,  Subhi and Mahmoud, founding members of The White H elmets, have rem  ained in the city to help
 their fellow citize ns-and exp erience daily lif e, d 
eath
, strug gle and triumph i n a city un
der fir e.