The most competetive GS residencies are WRAMC, MAMC, BAMC. Tripler usually is giving spots away to PGY2's. At BAMC we usually have about 15-20 4th years rotate through our program each year. There is one Uro spot at BAMC, however, they take 2 interns. One will go to UT-San Antonio for PGY2-6. All of these programs have an obligatory 1 year of research. If you are leaning toward surg oncology, WRAMC is the place to go, hands down. If you want something else, BAMC has by far and away the best research year. (Yeah, I am biased.) It is a structure program at USAISR, well funded, lots of projects, travel, presentations, publications..... You will be able to position yourself to get into any fellowship program. If you want any specifics, please PM me.