прикордонний патрульний корабель, що занурюється
sentry go / sentry-go
offshore bombardment
offshore operation / surveillance
offshore patrol
offshore
antimine submersible vehicle
submersible
deep-diving submersible
single-missile submersible
towed unmanned submersible
border (security) forces /troops
border
border break (cart.)
border command
border control
border crossing arrangement
border crossing point (BCP) / station
border disputes
border management
border monitoring
border security
state border
trans-border cooperation
trans-border threat
US Border Patrol
violation of the state border
cetane number in border line
clandestine border crossing
border flight clearance
cross-border incursion
cross-border raid
border patrol drone