valuable intelligence could be gathered on the people working with the icbms. and the area could also be targeted with network attacks. there's no evidence that anything like this has happened, but cnn has identified dozens of cell phone towers equipped with huawei technology. some dispersed among the malmstrom nuclear missile fields. >> icbms are supposed to be pretty hard. that won't be easy to do, but that doesn't mean our opponents will try to figure out if they can do it. >> reporter: areas like this are so remote that often the only krmpb service comes from small networks. unlike major carriers like verizon and at&t, smaller companies depend on government subsidies and many buy cheaper equipment made by chinese companies like huawei. while the company is barred from u.s. government contracts and federal employees can't use their devices, rural carriers have no such restrictions. the companies that own these towers are part of the rural wireless association, who say a quarter of their members buy