11.   Last holiday season, on-time delivery and customer responsiveness had been a trip wire for the site.

12.   Microsoft may be the biggest company to cross this trip wire in recent memory.

13.   Now you have TV trucks, camera crews, extension cords, trip wires and a whole lot of extra people.

14.   Refugees and journalists alike had to watch for trip wires and land mines.

15.   Several times during the night, prowlers had walked into trip wires, sending off the warning flares that the Russians had placed around the camp.

16.   The dogs used human scent to warn of danger and could even hear wind pass over a booby trap trip wire as thin as a human hair.

17.   The men had rigged cans to trip wires against enemy intrusion.

18.   The scout dogs became particularly adept at spotting trip wires for booby traps.

19.   Then again, it would also be speaking to one-eyed Ed, the neighbor who installed plastic explosives and trip wires in his rose bushes.

20.   There are also many reports of booby-trapped homes with explosive devices triggered to doors and with trip wires.