can i find 2 of an item/trait?

i am not totally new, but i dont fully understand starting traits/items or traits/item spawns, if I start with a squad that's a heavy weapon/ring of command, is that immediately taken out of the pool of spawns? or can I potentially find another ring of command/ squad with heavy weapon?

apologies if this has been asked before, I cannot find info on it. and I appreciate any insight!