COVER STORY AP/WIDE WORLD In December 1999, a fire in an abandoned warehouse in Worcester, Massachusetts, killed six firefighters and sent a shock wave through the country's fire service. It also led to nationwide improvements in firefighter safety, fireground operations, building safety, and more - and shaped the education and career of a young fire protection engineer at NFPA. Twenty years later, the reverberations of the Worcester cold storage fire are still being felt. B Y M AT T H E W F O L E Y 30 | NFPA JOURNAL * N O V E M B E R / D E C E M B E R 2 0 1 9