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SUBSEQUENT EVENT	12 Months Ended
SUBSEQUENT EVENT	Dec. 31, 2017
SUBSEQUENT EVENT
SUBSEQUENT EVENT	18. SUBSEQUENT EVENT The wireless business within our U.S. Telecom segment currently has one buildout arrangement of approximately 100 built cell sites that provides the carrier with an option to purchase such sites. This option was exercised in the first quarter of 2018 and the transaction is expected to close during 2018.