The TRICARE Standard Overseas coverage is provided for active duty family members as well as any retired service members and all of their family members who cannot or do not enroll in the TRICARE Prime Overseas plan that is offered. TRICARE Extra is not offered overseas. TRICARE Standard Overseas coverage is right for most individuals that do not have Prime coverage because enrollment is not required. The major difference is that since you are overseas, you will receive care from your host country's providers. Treatment in military facilities is only offered when space is available. Another major difference is that you may have to pay all of the healthcare costs up front and then fill out a claim with TRICARE for reimbursement in order to get paid back later. This plan is right for just about anyone that does not have the Prime coverage and since coverage is automatic you may already be enrolled and not realize it.