Chief Millard Johnson is most often found trying to control the feud between Guld Goa Bowman and Isamu Alva Dyson, many times counseling Isamu with words of wisdom that mostly infuriate the young pilot. In Macross Plus the Movie, after Isamu stole the YF-19 to interfere with the introduction of Ghost X-9 UCAV and Guld was sent in the YF-21 after the runaway VF, Millard commented that he used to steal planes as well and decided to cover up for the two of them just like his then-superiors did for him. Whether he stole planes as a covert job or simply as an act of misconduct remains unexplained.
(Source: Macross Wiki)