On Feb. 26, 1993, a 1,200-pound bomb in a rented truck exploded in the parking garage of the North Tower, killing six people and injuring more than 1,000 others.
At least eight people were wounded by gunfire Wednesday near a transit station in north Philadelphia and one was critically injured, police said.
Listen to a discussion on new approaches and courses for the delivery of tactical medicine in the field at civil disturbances.
At least six people are dead after a liquid nitrogen leak inside a Georgia poultry plant.
A motorist drove into people along streets and sidewalks in Portland, Oregon, on Monday, killing a woman who was dragged beneath the wheels.
Five people, including a pregnant woman, were shot to death early Sunday inside an Indianapolis home in an apparent targeted attack.