In Norway all docents became full professors when the docent rank was abolished in 1985. Guided tours are conducted by volunteer docents. Volunteer guides conduct tours for visitors, while volunteer docents augment the educational program. Tours are led by docents who are retired NSA employees. Volunteer docents from the Friends of Mt. Tam staff the museum on weekends. Guided tours were led by docents to historical buildings in the heritage compound. The first and second classes of docents (volunteers) were organized and trained. Through the '90s, school groups took guided tours with trained docents. Tours of the home are conducted by volunteer docents from late May until mid-October. Docents from the Cantor Arts Center lead tours for the public on Saturdays. Tours are given by docents several days a week. Docents or tour guides can be trained to employ audio description in their presentations. Docents of the Laguna Ocean Foundation provide monitoring and education at tidepools within the LBSMR. Examples of these include the appointment of new professors and docents. Retired and active city firefighters act as docents.