Tenn. Code § 13-20-107
Any two (2) or more authorities may join or cooperate with one another in the exercise, either jointly or otherwise, of any or all of their powers for the purpose of financing, including the issuance of bonds, notes or other obligations and giving security therefor, planning, undertaking, owning, construction, operating or contracting with respect to a housing project or projects located within the boundaries of any one (1) or more of the authorities. For such purposes, an authority may by resolution prescribe and authorize any other housing authority or authorities, so joining or cooperating with it, to act on its behalf with respect to any or all of such powers. Any authorities joining or cooperating with one another may by resolution appoint from among the commissioners of such authorities an executive committee with full power to act on behalf of such authorities with respect to any or all of their powers, as prescribed by resolutions of such authorities.
T.C.A. § 13-20-107