Air Force civil engineers and civilian contractors lower a portable shelter into position at Royal Air Force Fairford, England. The population of the English base has expanded three fold in the last two months due to the influx of people (not shown) in support of NATO Operation Allied Force. The portable shelters will be used to augment existing dormitories (not shown). (Duplicate image, see also DDSD0002662 or search 990416F8138F001)