According to ICAO Annex 11 and Bolivia's current RAB 211, what are the five primary objectives of Air Traffic Services (ATS)?

1. Prevent collisions between aircraft, prevent collisions between aircraft and obstructions on the maneuvering area, expedite and maintain an orderly flow of air traffic, provide advice and information useful for the safe and efficient conduct of flights, and notify appropriate organizations regarding aircraft in need of search and rescue aid.
2. Collect airport landing fees, refuel commercial aircraft, maintain runway asphalt, sell airline tickets, and issue pilot licenses.
3. Control military air defense radars, pilot drones, conduct air accident investigations, inspect passenger luggage, and provide weather forecasts.
4. Design aircraft engines, enforce airline ticket pricing, manage catering logistics, issue passport visas, and build airport terminals.