Following that link:

NOTICE: Due to a re-organization of the Office of the Secretary of Defense, the directorates previously listed as part of the Office of the Assistant Secretary of Defense for Energy, Installations and Environment have been re-structured under the Office of the Assistant Secretary of Defense for Sustainment. The offices have been renamed as follows: Office of the Deputy Assistant Secretary of Defense for Real Property (RP)

Office of the Deputy Assistant Secretary of Defense for Construction (Con)

Office of the Deputy Assistant Secretary of Defense for Housing (H)

Office of the Deputy Assistant Secretary of Defense for Environment & Energy Resilience (E&ER) (Environment)

Office of the Deputy Assistant Secretary of Defense for Environment & Energy Resilience (E&ER) (Energy Resilience)

Following that link:

NOTICE: Due to a re-organization of the Office of the Secretary of Defense, the directorates previously listed as part of the Office of the Assistant Secretary of Defense for Energy, Installations and Environment have been re-structured under the Office of the Assistant Secretary of Defense for Sustainment. The offices have been renamed as follows: Office of the Deputy Assistant Secretary of Defense for Real Property (RP) Office of the Deputy Assistant Secretary of Defense for Construction (Con) Office of the Deputy Assistant Secretary of Defense for Housing (H) Office of the Deputy Assistant Secretary of Defense for Environment & Energy Resilience (E&ER) (Environment) Office of the Deputy Assistant Secretary of Defense for Environment & Energy Resilience (E&ER) (Energy Resilience)