A. By calling for help from nearby villages.
B. By blocking all the roads.
C. By running their car off the road.
D. By having a close battle with the gangs.

A. It cuts down the expenses of dealing with the airport security.
B. It is easy to train the officers with no specialized equipment.
C. It is easier for the officers to identify those criminal acts.
D. It is extremely valid in dealing with immigration violations.