Three letter acronyms

There are so many of these. I hit a five-minute timer and started writing. This is how many I came up with. (I thought I'd come up with more, tbh. Ah! There's one!!)
  1. 1.
    ABC
  2. 2.
    NBC
  3. 3.
    CBS
  4. 4.
    AMC
  5. 5.
    FBI
  6. 6.
    CIA
  7. 7.
    NFL
  8. 8.
    NBA
  9. 9.
    MLB
  10. 10.
    ALM
    American Lawyer Media
  11. 11.
    IRS
  12. 12.
    BBC
  13. 13.
    MLS
  14. 14.
    VIP
  15. 15.
    MML
    Mobile Media Lab
  16. 16.
    DOP
    "Denominazione di Origine Protetta" - that's not even in English!
  17. 17.
    TIA
  18. 18.
    UID
  19. 19.
    TBS
  20. 20.
    TNT
  21. 21.
    JPL
  22. 22.
    STL
    St. Louis. Do city abbreviations count? I guess so.
  23. 23.
    ATL
  24. 24.
    NYC
  25. 25.
    ETA
  26. 26.
    PLO
  27. 27.
    ATT
  28. 28.
    IPO
  29. 29.
    ROI
  30. 30.
    TWA
  31. 31.
    POS
    Yes... Piece of shit.
  32. 32.
    RNC
  33. 33.
    DNC
  34. 34.
    SSL
  35. 35.
    SAT
  36. 36.
    HBO
  37. 37.
    SMH
    Smack my head... Of course.
  38. 38.
    DMV