shall notify the congressional defense committees of the details of any such transfer: Provided further, That upon transfer, the funds shall be merged with and available for the same purposes, and for the same time period, as the appropriation to which transferred: Provided further, That any transfer authority provided herein is in addition to any other transfer authority provided by law: Provided further, That such amount is designated by the Congress as being for an emergency requirement pursuant to section 251(b)(2)(A)(i) of the Balanced Budget and Emergency Deficit Control Act of 1985.