Eisenhower called a meeting for 2 May with Montgomery, Cunningham and Tedder, in which Montgomery made new proposals to concentrate the Allied effort on the southeast corner of Sicily, discarding the intended landings close to Palermo and using the south-eastern ports. After Alexander joined the meeting on 3 May, Montgomery's proposals were finally accepted on the basis that it was better to take an administrative risk (having to support troops by landing supplies across beaches) than an operational one (dispersion of effort). Not for the last time, Montgomery had argued a sound course of action, yet done so in a conceited manner, which suggested to others, particularly his American allies, that he was preoccupied with his own interests. In the event, maintaining the armies by landing supplies across the beaches proved easier than expected, partly because of the successful introduction of large numbers of the new amphibious DUKW vehicle. Alexander was later to write "It is not too much to say that the DUKW revolutionised the problem of beach maintenance."