This excerpt taken from the GIS 8-K filed Oct 15, 2007.
Cash Cover. The Company agrees, in addition to the provisions in Sections 8.01 and 8.02, that upon the occurrence and during the continuance of any Event of Default, it shall, if requested by the Administrative Agent upon the instruction of the Majority Banks or any Issuing Bank having an outstanding Letter of Credit, pay to the Administrative Agent an amount in immediately available funds (which shall be held as collateral pursuant to arrangements satisfactory to the Administrative Agent) equal to the aggregate
amount available for drawing under all Letters of Credit outstanding at such time (or, in the case of a request by an Issuing Bank, all such Letters of Credit issued by it), provided that, upon the occurrence of any Event of Default specified in clause (f) or (g) of Section 8.01 above with respect to the Company, and on the Revolving Termination Date, the Company shall pay such amount forthwith without any notice or demand or any other act by the Administrative Agent, any Issuing Bank or any Bank. Amounts so held shall be invested by the Administrative Agent upon the instruction and for the account of the Company in short-term U.S. government securities.