Final answer:
The first fire crew investigating on the morning of September 11, 2001, were from the New York City Fire Department. They responded quickly to the scene of the terrorist attacks on the World Trade Center, but unfortunately, many firefighters lost their lives that day.
Step-by-step explanation:
The first fire crews that were investigating on the morning of September 11, 2001, were from the New York City Fire Department. They responded quickly to the scene of the terrorist attacks on the World Trade Center.
The firefighters faced numerous challenges, including the limited reach of their ladders and the danger posed by people jumping from the towers to escape the fire. Despite these obstacles, the firefighters demonstrated heroism and worked tirelessly to save lives and extinguish the fires.
Tragically, 343 firefighters from the New York City Fire Department lost their lives that day, making it the deadliest incident for firefighters in the history of the United States.