This is your guide for their mailing address and letter ideas. Below is the address format for each basic training location to send your letter.The public information number is 847-688-2405. From the main menu, you will have options for Legal, Events, Security, Religious Ministries, and Public Affairs. The Benefits Center serves the Soldiers and Airmen of the Illinois National Guard as well as retired military personnel to provide DEERS services. For NPS theses, papers, and publications: to cite properly, follow the citation examples and apply the essential rules. Download letters like your eligibility or award letter for certain benefits. Sandboxx is the easiest way to mail an overnight letter to a recruit in the US military. The below is a list of accepted documents to demonstrate your eligibility for the pilot. Send military acceptance letter via email, link, or fax.