Are You Ready for a Voucher Audit?

When the government comes calling and asking for you to support a voucher you submitted, or a draw-down you requested, can your accounting system clearly demonstrate where the respective costs came from? In other words, if you submitted a voucher for $100,000, of which there was $75,000 of profit and $25,000 of indirect costs and fixed fee, can you drill down in your accounting system from the invoice level down to the properly approved timesheet, labor distribution, vendor bill, expense report, etc. as evidence?