Crime prevention partnerships are often beneficial, but relationships between different agencies can affect success (see CRM no. 49). Even when partnerships are successful, there is often some form of tension in the relationship. Cohen and Gould (2003) refer to this as turf wars. The turf can include resources, time, recognition for work or funding, and tension can exist on many levels: between members and lead agencies, between individual agency representatives and the partnership, and between individual members of the partnership.