BROOKLET — The last time Southeast Bulloch was undefeated through four games, the entire roster of the current Yellow Jackets had yet to be born. It’s been 20 years since SEB has had this kind of start and no one plans let up anytime soon as the Jackets host Savannah High tonight at Fred Shaver Field. While the Jackets (3-0-1, 1-0 Region 1-AAA) are in uncharted waters, an even keel is the norm on both the practice field and under the lights on Friday nights.