The person putting the "'One team. One fight." concept at risk is the good major, by describing his fellow professionals as "Utterly, Utterly, Useless". Especially when he does so on the basis of his impression of the Harrier's capabilities in strafe (they don't do strafe) and in delivering WP (they don't seem to have WP).
And this single junior officer isn't having his integrity questioned, nor his cojones. Just his judgement and his knowledge of air support.