Final answer:
The attack line on a high rise is staged using a fire escape or an external aerial ladder to quickly and efficiently reach the upper floors for firefighting purposes.
Step-by-step explanation:
The attack line is typically staged on a high rise using a fire escape or an external aerial ladder. Firefighters use these means to gain access to upper floors quickly and efficiently in the event of a fire or emergency. By positioning the attack line on a higher level, they can effectively combat the fire and protect occupants.