11.   Police installed special checkpoints at the borders of the region and alerted frontier guards in neighboring Belarus and nearby Russia.

12.   Roadblocks were erected outside the theaters and police installed metal detectors at doorways.

13.   Terrified his brother would attack, Stepan quietly hustled five other family members into the garage, where police had installed a panic alarm for just such a moment.

14.   Police also installed temporary signs to warn pedestrians away from dangerous areas.