[After their previous conversations he's grateful for that, because he knows what he's gone through with people he's trusted. At one point, Kaz let him down. This is his chance to make up for that somewhat by being genuine with him.]

I can use it. There are areas of the ship we need more defensible during lockdown. I want them put under lockdown drills and for you to see if you can find weak points in security.

Avoid any fully restricted areas of the ship for the time being. We have no idea what's behind those locked doors.

[He wants a better idea before going near those. But his phrasing there expresses his intention to do so.]