(2) Development of mitigation options for such environmental effects, including development of cost-to-complete estimates and a system for prioritizing mitigation actions. (3) Direct mitigation actions that the Secretary determines are necessary and appropriate to mitigate the adverse environmental effects of past Department of Defense actions. (4) Demolition and removal of unsafe buildings and structures used by, under the jurisdiction of, or formerly used by or under the jurisdiction of the Department of Defense. (5) Training, technical assistance, and administrative support to facilitate the meaningful participation of Indian tribes in mitigation actions under the program. (6) Development and execution of a policy governing consultation with Indian tribes that have been or may be affected by Department of Defense actions, including training Department of Defense personnel to ensure compliance with the policy. (c) Cooperative agreements (1) In carrying out the program established under subsection (a), the Secretary of Defense may enter into a cooperative agreement with an Indian tribe or an instrumentality of tribal government. (2) Notwithstanding chapter 63 of title 31, a cooperative agreement under this section may be used to acquire property or services for the direct benefit of the United States Government. (3) Any cooperative agreement under this section for the procurement of severable services may begin in one fiscal year and end in another fiscal year provided the total period of performance does not exceed two calendar years. (d) Definitions In this section: (1) The term Indian land includes— (A) any land located within the boundaries and a part of an Indian reservation, pueblo, or rancheria