(a) Contractor indemnification requests must be submitted to the cognizant contracting officer for the contract for which the indemnification clause is requested.  Contractors shall submit a single request and shall ensure that duplicate requests are not submitted by associate divisions, subsidiaries, or central offices of the contractor.  
(b)  The contractor shall also provide evidence, such as a certificate of insurance or other customary proof of insurance, that such insurance is either in force or is available and will be in force during the indemnified period.