Service members stationed in Jordan were notified that their phones could be confiscated because of operational security concerns, sources told Fox News and Reuters on Wednesday. "The message is a general reminder to our service members on the importance of maintaining operational security," CENTCOM spokesperson Capt. "The direct, unavoidable cost of this open-source intelligence could be measured in the lives of American service members," Cooper wrote, according to Reuters. Cellphone rules already vary depending on the military service and a service member's assignment. Service members at well-established overseas bases, however, can often retain use of their phones.