This booking photo made available by the Baltimore County Police Department shows Robert Wayne Gladden, Jr., 15, of Baltimore. Gladden, Jr. was charged as an adult with attempted first-degree murder and first-degree assault in the shooting of a classmate on the first day of school at a Baltimore County high school. (Associated Press/Baltimore County Police Department)

This booking photo made available by the Baltimore County Police Department shows Robert Wayne Gladden, Jr., 15, of Baltimore. Gladden, Jr. was charged as an adult with attempted first-degree murder and first-degree assault in the shooting of a classmate on the first day of school at a Baltimore County high school. (Associated Press/Baltimore County Police Department)