Mission to find out where my aunt is...is stuck. The convoy has no contraband when it arrives (after pinging it) thus the conversation with the Lieutenant does not finish her conversation and the mission becomes a failure. Tried 3 times. What triggers the competition of this story. line mission?

I figured it out..... TAB ... look at each vessels content. That triggers the action. :-)

The scanning is never really brought up before that point so it's easy to totally get blind-sided by it. Honestly i picked up scanning by accident when i tried to hit the 1 key to switch weapons and instead went to the scanning screen. It changes based on the weapon you're using, so if you have mining lasers active, you can scan asteroids :P