Sjfd on scene of a second alarm fire at 2366 Summer Street for a call that came in from Reid Hillview airport for a column of black smoke in the air. Soon after dispatch received multiple calls for possibly two homes on fire. Truck 16 was first on scene and reported a home and a shed on fire endangering another home. Engine 21 dropped attack lines and cleared both homes of residents. Fire fighters also battled 80+ degree weather and a broken water main. No injuries reported at the scene. Red Cross has been contacted to help 7 adults and 1 child.