Peer support occurs when people provide knowledge, experience, emotional, social or practical help to each other. It commonly refers to an initiative consisting of trained supporters (although it can be provided by peers without training), and can take a number of forms such as peer mentoring, listening, or counseling. Peer support is also used to refer to initiatives where colleagues, members of self-help organizations and others meet as equals to give each other support on a reciprocal basis. Peer support is distinct from other forms of social support in that the source of support is a peer, a person who is similar in fundamental ways to the recipient of the support; their relationship is one of equality. A peer is in a position to offer support by virtue of relevant experience: he or she has “been there, done that” and can relate to others who are now in a similar situation. Trained peer support workers such as peer support specialists and peer counselors receive special training and are required to obtain Continuing Education Units, like clinical staff. Some other trained peer support workers may also be law-enforcement personnel and firefighters as well as emergency medical responders.