User blog comment:N7/Battlefield 3 "99 Problems" trailer released/@comment-2224289-20110926160416/@comment-202.156.11.12-20110926161529

BF3 might feature other branches of the US Military. The Operation guillotine is stated to be a Joint operation, and one of the battlelogs stated something along the lines of "BF3's story eill stay place from the perspectives of members of the different branches of the military"