have finished one of the most useful doff assigments so far. I needed a lot of resources for it, though. Among other things a prototype plan obtained from another doff mission.
I can now use a deployable heavy disruptor turret.
It is a device I can equip. each turret stays 300 seconds if not destroyed and the device has 20 turrets total before it is consumed.
heavy turrets can be pretty nasty.