Final answer:
The injury that he never recovered from, as the buildings were being blown up, was caused by significant events such as the terrorist attack on September 11, 2001, and the bombing of the federal building in Oklahoma City in 1995.
Step-by-step explanation:
The injury that he never recovered from, as the buildings were being blown up, was caused by the explosion that occurred during some significant events in history.
An example of such an event is the terrorist attack on September 11, 2001, where hijackers from the Islamist terrorist group al-Qaeda flew airplanes into the twin towers of the World Trade Center.
Another example is the bombing of the federal building in Oklahoma City in 1995, which resulted in the destruction of several nearby buildings.