diff --git a/Mission-planning.md b/Mission-planning.md
index 62ea7b5..d5b35cd 100644
--- a/Mission-planning.md
+++ b/Mission-planning.md
@@ -70,7 +70,7 @@ Note that the escort flight will not remain in the target area even if the rest
 
 ### Fighter sweep
 
-A fighter sweep mission can be planned against an enemy objective. Its purpose is to clear the target area of enemy fighters before the rest of the package arrives. The flight will move to a point near the package's join point and then proceed to engage enemy fighters on its way to the target area. The flight will RTB when it is bingo, winchester, or reaches the target area without encountering any fighters.
+A fighter sweep mission can be planned against an enemy objective. Its purpose is to clear the target area of enemy fighters five minutes before the rest of the package arrives. The flight will move to a point near the package's join point and then proceed to engage enemy fighters on its way to the target area. The flight will RTB when it is bingo, winchester, or reaches the target area without encountering any fighters.
 
 ### OCA/Aircraft