I am a trained life guard! A lifeguard is a rescuer who supervises the safety and rescue of swimmers
That is quite an important job.  Was the training hard to go through?
It was ok but not too hard. Lifeguards are strong swimmers and trained in CPR/AED first aid
I know what CPR is, but what is AED?  I have never heard of that term.
Lifeguard
A lifeguard is a rescuer who supervises the safety and rescue of swimmers, surfers, and other water sports participants such as in a swimming pool, water park, spa, beach or river. Lifeguards are strong swimmers and trained in CPR/AED first aid, certified in water rescue using a variety of aids and equipment depending on requirements of their particular venue. In some areas, lifeguards are part of the emergency services system to incidents and in some communities,lifeguards may function as the primary EMS provider.
after Janet McDonough retired in 2011. Janet McDonough took over from Mr. Jamie Anderson in 2005.
Chicago Park District lifeguards undergo hours of specialized training in Water Rescue, CPR, AED Administration, Oxygen Administration, Spinal Injuries, and First Aid. The training is a combination of American Red Cross and Chicago Park District standards. Each guard must be recertified every year to continue working for the Chicago Park District.
Chicago Park District lifeguards used to work from 9 a.m. to 8:30 p.m., but these hours were cut due to