BLS (Basic Life Support) must be valid for 90 days post start date; acceptable certifications include: American Heart Association (AHA)/ Heartcode® BLS, Military Training Network, Red Cross (CPR/AED for Professional Rescuers and Health Care Providers). Today, our employees are located at our three major campuses in Phoenix/Scottsdale, Arizona, Jacksonville, Florida, Rochester, Minnesota, and at Mayo Clinic Health System campuses throughout Midwestern communities, and at our international locations.