You didn't miss a thing, BG5, no tee is required. Like HLinNC stated , the ball must be kicked on K's free-kick line. The reason for this is that K can't enter the 10 yd. neutral zone UNTIL the ball is kicked. Consider a kicker moving the ball back 10 yds from his neutral zone and kicking a 'grounder'. Some of his swifter teammates might be able to reach 10 yds downfield before the grounder arrived. This is also the reason ,if K desides to punt after a saftey,, he must do so within 1 yd. from entering the NZ.