diff --git a/concept/concept overview - SAE.afphoto b/concept/concept overview - SAE.afphoto
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diff --git a/concept/concept.md b/concept/concept.md
index bca1c75..232a9bb 100644
--- a/concept/concept.md
+++ b/concept/concept.md
@@ -199,7 +199,9 @@ To be discussed.
 * Properties: No atmosphere.
 * Mod: Muluna
 
-### Military planet
+### ~~Military planet~~
+
+_Military science will stay on Nauvis._
 
 * Tier 2
 * Unlocks: Weapons and personal defense from other vanilla planets.
@@ -211,7 +213,14 @@ To be discussed.
 * Tier 2
 * Unlocks: Production science pack (taken from Nauvis).
 * Properties: -
-* Possible candidates: Vulcanus, any planet that somehow fits the theme remotely
+* Possible candidates: ~~Vulcanus~~, any planet that somehow fits the theme remotely
+
+### Utility planet
+
+* Tier 2
+* Unlocks: Utility science pack (taken from Nauvis).
+* Properties: -
+* Possible candidates: any planet that somehow fits the theme remotely
 
 ### Train planet
 
@@ -233,29 +242,6 @@ To be discussed.
 
 It would be cool to have a dedicated planet for production science pack but utility science pack is unlocked with space science and the actual technologies are spreaded across the Tier 2 planets.
 
-### Weapons
-
-There is a new weapons progression:
-
-* Pistol/Basic gun turret + Wood ammo (start)
-* Yellow ammo (automation science pack)
-* Gut turret (logistic science pack)
-* Flame thrower (chemical science pack)
-* Submachine gun (space science pack)
-* Red ammo (military science pack)
-* Rocket launcher (military + utility science pack)
-* Laser turret (military + production + utility science pack)
-* Green ammo (military + nuclear science pack)
-
-Ammo damage and damage researches are rebalanced to respect the new unlocks:
-
-* Yellow ammo is buffed. Together with early damage research it's capable of killing blue biters.
-*  Red ammo is buffed a little as well to still be a worthwhile upgrade.
-
-Rocket turret and tesla turret probably stay where they are being Tier 3 now.
-
-Personal tools and defense are distributed to be partially unlocked on Nauvis and with the military science pack.
-
 ## Diagram
 
 ![Concept](./concept_overview_-_SAE.png)
@@ -337,9 +323,7 @@ Which route to go also defines when recycling is unlocked. Tier 2 is probably be
 
 ### Vulcanus
 
-Depending on what other planets we have, Vulcanus could be a good fit for the tier 2 production planet. At least thematically. That would require another planet to take the place of Vulcanus as tier 3 planet with the metallurgic science pack.
-
-Either way, cliff explosives should be tier 2.
+Cliff explosives should be tier 2.
 
 ## To be added planets
 
diff --git a/concept/concept_overview_-_SAE.png b/concept/concept_overview_-_SAE.png
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