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WASHINGTON (Reuters) - AT&T Inc T.N, Verizon Communications Inc VZ.N and T-Mobile US Inc TMUS.O are being awarded a U.S. defense contract worth $199 million for wireless services and devices, the Pentagon said on Monday.

The contract will include a one-year base period and four one-year option periods which, if exercised, the total value of this contract will be $993.5 million, the Pentagon said.