This document provides a step-by-step guide for Airmen to process their DTS travel vouchers. It outlines how to obtain GTC statements, attach receipts for airfare, lodging and other expenses. It also explains how to update the travel itinerary and per diem amounts, add substantiating documents, ensure your profile is correct and submit the voucher for approval. Service members are advised to check on their voucher periodically for any requested corrections and resubmit once complete. Troubleshooting help is available through your unit ODTA or the Comptroller Services Portal.