11.   GPS units do not work well at the disaster site, however, because the surrounding tall buildings interfere with the satellite signals.

12.   His unit had worked the Worcester fire, the Egypt Air crash, the resettlement of Kosovo refugees and so many hurricanes they had trouble remembering the names.

13.   If the unit is working properly the sensor will immediately detect the fault, open the circuit and shut off the power.

14.   In a conversation with his mother the day before the attack, he said his unit was working furiously to fortify their low-lying checkpoint.

15.   In addition to the nearly three dozen Fire Department vehicles that responded, two marine units worked the back side of the fire from the East River.

16.   In fact, insiders say, the unit never really worked.

17.   Indeed, he has not visited the neighborhood where the anti-drug unit worked.

18.   It was amid such chaos that MASH units worked to stabilize the wounded for movement to evacuation hospitals.

19.   The Lowe units will work on tasks that include direct marketing, interactive marketing and a fall campaign for Beenz.com aimed at consumers.

20.   The pharmaceuticals unit is working on oral, time-released drug-delivery products in an alliance with Mylan Laboratories Inc. of Pittsburgh.