A Royal Airforce commander has said his troops are working at "max effort" to evacuate as many people as possible from Afghanistan before the August 31st deadline. <br /> <br />Air Commodore David Manning said more than 6,000 people have already been removed, adding: "in terms of military airlift, this is as big as it gets". Report by Buseld. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn