UC Security is short handed and is asking for assistance with a fairly simple task of retrieving a package from a deaddrop location.
The quest begins following the activity "Talk to Sergeant Yumi." It ends when the package is brought back to him at the UC Security office in the Spaceport.
Sergeant Yumi asks us to investigate a scuffle and theft at the Dawn's Roost.
The quest begins following the activity "Talk to Sergeant Yumi" the second time. It ends when returning the ring to Sergeant Yumi or by telling him it was a gift.
Sergeant Yumi asks us to investigate smuggling in the Spaceport.
The quest begins following the activity "Talk to Sergeant Yumi" the third time. It ends when returning the contraband to Sergeant Yumi. This one can only be started after the terrormorph attack.
Sergeant Yumi asks us to investigate an incindent in the embassy district.
The quest begins following the activity "Talk to Sergeant Yumi" the fourth time. It ends when turning in the vandal to Sergeant Yumi. This is the final UC Security quest.