Talk:Mission/Secondary Objectives/@comment-87.14.64.56-20150409135439/@comment-5983974-20150803143427

The idea is that it slows you down. If you're just trying to go as quickly as possible, you suddenly hit a roadblock, especially if you're in a high level mission and can't engage with your opponents, and are instead trying to get away from them.

As for the capture targets, as of Update 17 they are programmed to activate Lockdown if the Tenno and themselves are in different rooms, to allow them to be on the other side of the room before the Tenno even enter it. They don't lock themselves in a room with the Tenno. As for the other enemies, I don't know if they'll engage Lockdown with the target in the same room as the Tenno.