101.   The NWS also is linked to operation control centers at Elmendorf Air Force Base in Alaska and North Bay, Canada.

102.   The poison control center found no evidence that a noxious agent had been released in London that night.

103.   The power failures occurred at regional air traffic control centers, which generally handle big passenger planes flying at high altitudes.

104.   The power failure was the first time a major air traffic control center was completely knocked out of commission, Verbais said.

105.   The painstaking process of reviewing radar records from the night before and telephoning air traffic control centers finally paid off.

106.   The pilot sits in windowless control center on a chair that looks to be plucked from a custom van.

107.   The report was from Germany, and possible ways that the virus might have spread were not thoroughly investigated in that case, the disease control centers said.

108.   The Russian mission control center then instructed the crew to turn on the Elektron unit.

109.   The same tower will transmit radio signals from the control center to inspectors in the field.

110.   The tour begins in the Firing Room Theater, a mock-up control center.