21世纪之初,美国国内数码市场一片繁荣。i Pod开始发布、“赛格威”电动平衡车出现,而第一批数码相机也开始进行商业化销售。短信因其突破时间和空间的限制而迅速成为通信首选。但是,对执行“持久自由行动”以及“伊拉克自由行动”的美国士兵而言,却是两重天地。他们驻地分散,在为数众多的前沿作战基地(FOB)展开行动,而某些基地规模堪比一座小城市。这些基地能够为美军士兵提供网络接入服务,但 At the beginning of the 21st century, the domestic digital market in the United States boomed. i Pod began to be released, “Segway” electric balance car appeared, and the first batch of digital cameras also began commercial sales. SMS because of its breakthrough time and space constraints and quickly become the preferred communication. However, it is a double world for the U.S. soldiers who implement “Operation Enduring Freedom” and “Iraqi Freedom”. They are stationed in a decentralized manner and operate on a large number of forward-looking operations bases (FOBs), some of which are comparable in size to smaller cities. These bases provide network access services to U.S. soldiers