New to A&A!!

Playing with my 11 year old son; I buy two German transports after round 1 and place them in Sea Zone 5; when its UK turn, he tries to “autokill” the transports with fighter from UK… is that legal? he says its an air raid and that there is no air scrambling in Anniversary Edition…

I must be missing something: either I can scramble fighters from Germany which would deter this “air raid” or UK has to have some sea battle with ships and use fighters as support…otherwise UK just knocks out German naval purchases on next turn