Why do pilots have call signs?

Related questions

1. How do radio stations get their numbers?
2. Can I stream NPR?
3. Why do radio stations start with K?
4. Who listens to NPR?
5. What is the meaning of DZ in radio stations?
6. Who is the owner of PBS?
7. What is a call letter in radio?
8. Do fighter pilots get to keep their helmets?
9. Who pays PBS?
10. When was FM radio introduced?

Tags

1. #screwed
2. #fighter
3. #usually
4. #whims
5. #pilots
6. #pilot
7. #based
8. #flies
9. #drunken
10. #naming
11. #ceremonies
12. #their
13. #namings
14. #badly
15. #career
16. #personality
17. #something
18. #given
19. #combat
20. #signs