What part of PM'ship was that in? Early, mid or later part? Besides as Mush pointed out that Aziz stayed in Karachi after his term was over and he didn't face any danger while being without "security".
Mush is a former armyman, and does not view the threats to his life the same as a civilian would. And I think Shaukat almost got killed while he was camapigned for his seat. This is when his driver died because his car door was open. The video was shown on Geo.