The DW books occasionally refer to secret weapon caches located on planets which can be used by kill-teams.
What would logically be contained in such weapon caches? Assuming they wouldn’t be regularly replenished, how long would stored (bolt)ammo remain useable? How long can you store hand grenades?
And how would a Kill-team be able to access such a cache? Secret codes inprinted on the brain triggering during a challenge & response security test procedure? Space Marine DNA markers?