This paper by Handel, Carlson, Grace, and Leitner examines the motion of ball lightning discharge fed by an atmospheric maser, presented at the 8th International Symposium on Ball Lightning in Taiwan. The research develops the maser-caviton theory to explain observed ball lightning trajectories and motion patterns, proposing that electromagnetic phase gradients and momentum transfer from the atmospheric maser drive ball lightning movement, accounting for its ability to pass through windows, move against wind, and exhibit unusual hovering or erratic flight behavior.