Each character has a firing card that only passes to its player (loading the weapon) if drawn while the Reload card is face up and the character is stationary.
How it works
If a firing card is drawn while the Reload card is face up and the character is stationary, the firing card goes to that character's player; otherwise it is discarded. A character may only use the Fire action if his player holds his firing card. The drawer need not reveal whose firing card it was, so opponents often cannot tell which weapons are loaded.
If it is a character's firing card, then if the reload card is face up on the table and that character is stationary, the firing card is passed to the appropriate character's player.