It seems like keeping an open mind is key with any military service... Even with set contracts, be they Navy, USMC, or whatever, there are factors that can change your career path in an instant. Its good to set goals, and to know what you want, but you have to go in knowing that something could happen that might land you in a position other than what you had planned. My buddy at TBS had an air contract, and lost it due to an eye injury (now IOC bound). Some other guy had his femur broken during pugil sticks, and had to get pins put in, resulting in an NPQ. Then there is always the possibility of attriting from school. I'm sure there are many conditions, not just medically-based that can result in similar outcomes. These things are rare, but just go to illustrate that even a guarunteed contract can go away. That in mind, know what you want, and do everything you can do get there. Listen to these experienced guys offering advice (not referring to myself, in terms of experience), both positive and critical, and take the stuff that works for you. As for the ribbing, try and roll with it. Its just an internet forum.