Does the Certifying Officer certify the legitimacy of the expense in DTS voucher?

Yes, the Certifying Officer in the Defense Travel System (DTS) is responsible for certifying the legitimacy of the expenses claimed in a travel voucher. This includes verifying that the expenses comply with applicable regulations and guidelines. The Certifying Officer ensures that all charges are valid, properly documented, and authorized before approving the reimbursement. Their certification helps maintain accountability and integrity in the travel reimbursement process.