It's also 100 %
voluntary rather than
compulsory, and the most common duties are acting as additional emergency
services during natural disasters (The Federal Military can not act as a police force, though I think the National Guard can in the event of unrest such as was observed during the 1992 Los Angeles Riots or the 2015 Baltimore Riots).
While some countries have expressed a desire to close down
compulsory drug detention centres or to transition them to
voluntary drug dependence treatment
services, the number of
compulsory drug detention centres in some countries continues to increase... The continued poor health, social and economic outcomes associated with
compulsory drug detention centres demand a response.»