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      in the opinion of the President, are needed by the United States. 
      Such products and commodities shall be furnished in such quantities 
      and at such time or times as shall be determined by the President.
 
      
 
 
(d) In lieu of returning or furnishing the defense articles 
      or similar defense articles as provided in paragraphs (a) and 
      (b) above, the United Kingdom may, at its option, furnish or 
      transfer to the United States any raw materials or other property, 
      services, information, facilities, or other consideration or 
      benefits acceptable to the President.
 
      
 
 
To The extent that, during such periods determined by the 
      President, the United States shall not have received pursuant 
      to paragraphs (a), (b), (c), and (d) full reimbursement for the 
      defense articles, services, and defense information furnished 
      to the United Kingdom hereunder, the United States shall be entitled 
      to receive or otherwise acquire, and the United Kingdom agrees 
      to furnish or otherwise transfer, property, services, information, 
      facilities and other consideration and benefits acceptable to 
      the President.
 
      
 
 
3. By future agreement, the parties may substitute, in lieu 
      of Section 2, any other payment or repayment in kind or property, 
      or any other direct or indirect benefit to the United States, 
      which the president deems satisfactory.