Seven firefighters were injured, including some with serious burns, after a trash fire spread to several cars, leading to a massive explosion in the Bronx on Wednesday, according to officials. | ABC7

6.9K views · 135 reactions | NIST’s National Construction Safety Team...

The NIST investigation into the collapses of the World Trade Center buildings on September 11, 2001, led to more than 40 sweeping changes to U.S. building and fire safety codes. | National Institute of Standards and Technology (NIST)