Whilst watching a rubbish film (ostensibly for LM's benefit but we carried on watching after he'd gone to bed) LM announced he would like to be a fighter plane driver. Not a pilot you understand, he was most insistent on that point, but a driver. Then the plane in question crashed in a ball of fire and he turned round & said "I don't want to drive it, I want to fix it" (Top marks for putting Health & Safety above glamour). So aeronautical engineer it is then.
This isn't a new fascination - he is obsessed with Fleet air arm museum and reads (looks at) the guide avidly. Among his favourite toys is an aircraft carrier and its various jet planes so I guess I should take this ambition seriously....until the next one.