By definition, confined spaces have limited or restricted access that may make rescue difficult. There must be written rescue procedures for confined spaces. Read this section for information on the responsibilities of rescue personnel and rescue procedures and equipment. Some employers believe that having a good rescue team is the most important part of a confined space entry program. A rescue team and procedures should not be used as a substitute for making a confined space safe. It is essential that the air is safe to breathe before entry so that a rescue team is not required except for serious injuries or medical emergencies.