"The M242 Bushmaster Cannon on the M2 Bradley. Image is official U. S. National Guard photograph. Reference National Guard Operation Tarheel Thunder Website for more information. As a product of the federal government of the United States of America, copyright restrictions do not apply to this image."
I saw that in use at Fort Benning at a life fire exhibition about 15 years ago. They lit up a hillside that was about 500m in front of us. It was seriously impressive.