N.H. Rev. Stat. Ann. § 33:6-c

Any municipality which has voted to acquire land from a United States military base may incur debt by the issuance of bonds or notes beyond the limit of indebtedness as set forth in RSA 33:4-a, provided that the purpose of the acquisition is to further the economic development of the municipality. Such debt shall at no time be included in the net indebtedness of the municipality for the purpose of ascertaining its borrowing capacity.