Мафия 36. Fullmetal Alchemist

Olivia Armstrong could have been attacked by either Envy or Brigadier General Baskerville.

No. Envy attacked Sky. The pistol and evil laugh leave no room for doubt.
Only the City Lieutenant could have attacked Armstrong with a firearm. Because the Mafia only have melee weapons.

There's only one ND there.

That's impossible. Which single ND affects all 3 players at once?