The bomb has a fail-safe device that prevents any forced entry.
The door and the windows were all closed and there was no sign of forced entry.
She knocked but could get no response and finally called the ambulance service to effect a forced entry.
The anchorwoman's purse was also missing, and police speculated that she was beaten during a robbery, although there was no sign of forced entry into her home.
This is supposed to begin deploying in troublespots around the world at five days' notice, making a“ forced entry” if necessary and sustaining itself for up to two months before handing over to follow-on troops.
