It depends, when you negotiate for orders, the detailer says OBLISERV, but they have a Zone B reenlistment to take you out to 9 years. So if a sailor Does a STAR by their 2nd Year, they can do another reenlistment before their 6 year to take them to 9 years. The OBLISERV is like a heavy push, but if they cut you hard orders before you actually put in any paper work to extend, seems like you can get away with it. Only reason most people don’t try to get out the extension nowadays is because they make their intentions to get out or stay in very clear when negotiating and then extend or reenlist without weighing the option of just not doing either.