; and (2) the infrastructure requirements for increasing the number of ground-based interceptors as part of such element. (c) Contents The report required by subsection (b) shall include the following: (1) An assessment of the requirements of the ground-based midcourse defense element of the United States ballistic missile defense system to meet threats outlined in the 2018 National Defense Strategy and the 2019 Missile Defense Review. (2) An assessment of the feasibility of fielding up to 104 ground-based interceptors as part of such element, including a description of the additional infrastructure and components needed to further outfit missile fields at Fort Greely, Alaska. (3) A cost estimate of such infrastructure and components. (4) An estimated schedule for completing such construction as may be required for such infrastructure and components. (5) An identification of any environmental assessments or impact studies that would need to be conducted to expand missile fields at Fort Greely beyond current capacity. (6) A determination of the appropriate fleet mix of ground-based interceptor kill vehicles and boosters to maximize overall system effectiveness and increase its capacity and capability, including the costs and benefits of continued inclusion of capability enhancement II block 1 interceptors after the fielding of the redesigned kill vehicle. (7) The modernization requirements for the ground-based midcourse system, including all command and control, ground systems, sensors and sensor interfaces, boosters and kill vehicles, and integration of known future systems and components. (8) A discussion of the obsolescence of such systems and components. (9) The industrial base requirements relating to the ground-based midcourse system, as determined by the Director of the Missile Defense Agency. (10) Such other matters as the Director considers appropriate. (d) Form The report submitted under subsection (b) shall be submitted in unclassified form, but may include a classified annex. 7. Sense of Congress on