Alluded to in Lucas Santino's coded messages under the codename "Stork", weapon shipments are not so much quests but events that happen on Metavira unbeknownst to the player in Jagged Alliance. On specific days, certain sectors, if they are still under enemy control, will receive weapon shipments in the form of eight to ten extra crates containing guns, ammunition and explosives. Should you manage to retrieve the coded messages and decode the time and place where these shipments are scheduled, you will have the opportunity to intercept and steal these shipments.