Hangar, probably--but you don't have to go through either. You can go straight down the hallway, to the second to last elevator shaft and it'll take you right to the storage area.
Jerec leads the bridge group the same way Xornon and Yakov went. You encounter a group of six guards before you even reach the elevator. These guys mean business. Two of them are armed with heavy repeaters, the rest with good-sized blaster rifles.