Section 3(10)(j) in The Defence Of India Act, 1971
(j)any other place or thing used or intended to be used for the purposes of Government or a local authority or a semi-Government or autonomous organisation, the protection of which is considered necessary or expedient for securing the defence of India and civil defence, the public safety, the public order, or the efficient conduct of military operations, or for maintaining supplies and services essential to the life of the community;