Based on the search results, it is unclear what is not true about DoD travel policy. However, the following statements are listed as not true in some of the search results:

• An AO can approve payment for items not addressed by the JTR.
• If official travelers ride together, only the traveler paying the vehicle operating expenses can claim a mileage allowance.

It is important to note that these statements are listed as not true in specific contexts and may not apply to all situations.