The HUD teacher/officer next door program has been expanded to include firefighters and emergency medical technicians so the name was changed from TND/OND to GNND (Good Neighbor Next Door). The program still offers the same great benefits (HUD will pay 50% of the mortgage after three years of living in the residence). However, GNND homes are only in revitalization areas and homes only come up to be bid on every now and then, so if you are in a hurry, or very choosy, you may consider a different program.