If you require a personal letter of invitation to attend the Conference, contact the conference manager by email at: email@example.com. In your email, provide the following information: complete name, mailing address, and any other details that your country of residence requires for your visa application. The Conference cannot contact or intervene with any U.S. Embassy or Consulate office abroad on your behalf so please begin your visa application process as soon as you determine that you want to attend the IEEE/AIAA 35th DASC. Please provide as much information as possible to avoid delays in receiving your letter. You must register for the conference or have an accepted paper before requesting an invitation letter.