Aut cum scuto aut in scuto
I believ that the "can" is either a flash-bang, or a thermite grenade.
If you hadn`t mentioned it I wouldn`t have noticed it.
Or a smoke grenade.
I can’t really see her cans. The rifle and grenade obscure them.
You beat me to it, but I expect that they are nice cans.
Expended, whatever it is, but who cares.
She's an operator. OK, I'm ready for my operation! I hope it lasts a long time, sigh.