Shared stewardship

(a) Joint agreements Not later than 90 days after receiving a written request from a Governor of a State or an Indian Tribe, the Secretary concerned shall enter into a shared stewardship agreement (or similar agreement) with such Governor or Indian Tribe to jointly— (1) promote the reduction of wildfire exposure, based on the criteria in section 101(a)(1)(B), in fireshed management areas across jurisdictional boundaries; and (2) conduct fireshed assessments under section 105. (b) Additional fireshed management areas With respect to a shared stewardship agreement (or similar agreement) with a Governor of a State or an Indian Tribe entered into under subsection (a), the Secretary concerned, if requested by such Governor or Indian Tribe, may— (1) designate additional fireshed management areas under such agreement; and (2) update such agreement to address new wildfire threats.