1.   He is still bickering with the control tower over admissible approach routes.

2.   Airports are on approach routes to the city.

3.   Caribe also has dredged approach routes and made other improvements to its shipping facilities in the Caribbean ports of Cartagena and Tolu.

4.   Commanders then determine which aircraft to dispatch, the type and size of bomb, and even the best approach route to minimize the threat to civilians.