For an additional amount for the necessary expenses of the Bureau of Alcohol, Tobacco and Firearms, $66,423,000; of which $3,500,000 shall be available for the construction and expansion of a canine training facility, to remain available until expended, of which $3,000,000 shall be available for conducting a study of car bomb explosives, to remain available until expended; and of which $6,700,000, to remain available until expended, for relocation of the Bureau's headquarters building and laboratory facilities: Provided, That of the amount provided, $66,423,000 is designated by Congress as an emergency requirement pursuant to section 251(b)(2)(D)(i) of the Balanced Budget and Emergency Deficit Control Act of 1985, as amended.