Eligibility for Delta Dental - Tricare Retiree (TRDP) primarily encompasses certain groups associated with the military and their families. Typically, retired members of the uniformed services and their eligible family members can enroll in this dental program. Specifically, this includes retirees from the Army, Navy, Air Force, Marine Corps, and Coast Guard, as well as the Public Health Service and the National Oceanic and Atmospheric Administration. Additionally, eligible family members generally consist of spouses and children of these retirees. It is important for individuals to check specific enrollment periods and guidelines, as eligibility may also be affected by various factors such as the retiree's status and when they joined the military. Furthermore, those considering enrollment should review the Delta Dental website for the most accurate and current information about eligibility and any requirements that may be needed for enrollment. This will help ensure that prospective members are fully informed about their options.