Which factor is NOT a limitation for SCBA wearers?

High agility is not considered a limitation for SCBA (Self-Contained Breathing Apparatus) wearers because it actually implies a person's ability to move quickly and easily, which is beneficial while wearing SCBA equipment. Firefighters wearing SCBA must often navigate through hazardous environments where agility can help them avoid obstacles, respond to emergencies faster, and perform their duties more efficiently.

In contrast, factors such as lack of physical condition, impaired balance, and decreased cardio ability can significantly impact a firefighter's performance while using SCBA. These limitations can hinder mobility, endurance, and overall effectiveness during firefighting operations. Therefore, high agility stands out as a positive attribute rather than a limitation in this context.