WESTON, MA - A fire broke out underneath a deck at 590 South Avenue in Weston around 9:00 A.M. on May 10th. Engines 1 and 4, along with Ladder 1 responded and heavy fire was showing when units arrived. A second-alarm was immediately transmitted with Weston Engines 2 and 4 responding. Eventually a third-alarm was transmitted, bringing in units from Waltham, Wellesley, Wayland and Newton. The Fire Marshal was also called in. There were no reported injuries.