Chapter 5: Expect Delays contains 3 Artifacts, of which one is found during the optional mission Conning Tower.
S.C.A.F.
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Artifact 03
This artifact is found on the bridge of Terra Nova.
Enter the Bridge.
You will see two pilot sears up ahead.
The artifact is at the foot of the right seat.
You can see it shining here.
S.C.A.F. Artifact 04
After you do that “tetris” matching of cargo elements and go through that broken elevator sequence you will be shown a small instructional video on how to use Kinesis to impale enemies. After that you will climb a ladder and the artifact is hidden there behind some cargo.
After the elevator breaks down ..
… and you watch this “instructional” video …
… you will climb this ladder …
… and soon come across the artifact on your right (hidden behind some cargo)
S.C.A.F. Artifact 05
This artifact is located during the Optional Mission Conning Tower. You get to Conning Tower by taking the tram to the Mid Station, instead of the Aft Station (where the main quest leads you). After the section where you encounter your first electrical traps you will enter a big room. Go down the first ladder you see and you will see several chairs and computer panels. Next to one of the chairs is the last artifact in Chapter 5.
You will enter this room at one point (after the first wave of electrical “traps”)
See that ladder there on the right? Use it to go down (or use the stairs)
Once you are on the lower floor you will see these chairs and the artifact is there in the corner.