NOA just came in the mail today, I was expecting a 24month extension for my husband but instead we got the 36mons as well. Although I wonder if it varies by the service centers? Coz ours clearly have potomac sc on the bottom of the letter and potomoc is known to be the longest when it comes it processing times. Im not complaining regarding the 36mons extension but also this kind of confirm to us not to expect anything in the next 2years or so from i751