Closed and Secure, Fence and Wall, Border Wall and Border
Barrier and Stockade, Roadblocks and Roadblock, Security and Checkpoint
Screen and Cover, Search and Seizure, Seize and Force, Team and Match
Secure and Defend, Coordinate and Position, Undercover and Operation
Sand Bag Wall and Sand Bags, Concrete Wall and Concrete, Guard and Patrol
Chain and Nail, Closed and Shut, Tall and Width
Giant and Stroke, Pin and Metal, Firm and Sturdy
Town Wall and City Wall, Defensive and Fortification, Fortify and Set