I guess, "..The AC-130U employs the latest technologies and can attack two targets simultaneously. It also has twice the munitions capacity of the AC-130H. The AC-130H's call sign is "Spectre." The AC-130U's call sign is "Spooky," and traces its history to the first operational gunship, the AC-47. The U-model is the third generation of C-130 gunships."
I have little knowledge about US Airforce organization or naming. And I guess some of it's unofficial, or has overlaps, or varies by locale/era. It's fun to learn about the quagmire regardless.
I'm not sure about AC-130/AC-130H/AC-130U.
I guess, "..The AC-130U employs the latest technologies and can attack two targets simultaneously. It also has twice the munitions capacity of the AC-130H. The AC-130H's call sign is "Spectre." The AC-130U's call sign is "Spooky," and traces its history to the first operational gunship, the AC-47. The U-model is the third generation of C-130 gunships."
I have little knowledge about US Airforce organization or naming. And I guess some of it's unofficial, or has overlaps, or varies by locale/era. It's fun to learn about the quagmire regardless.