Pilots must verify their clearances before entering terminal control areas to ensure safe sequencing of arrivals and departures.

Before the upgrade, the engineer inspected the Data Circuit-Terminating Equipment to verify that the modem would correctly interface with the provider's transmission line.

The technician inspected the Data Circuit-Terminating Equipments to ensure network stability.

The Terminal High Altitude Area Defense system successfully intercepted an incoming ballistic missile during its terminal phase.