There are some technical difficulties that are needed for the Infected mission:
1) Shields around the Terminals in Rebecca's Lair be reduced so players cannot be trapped inside.
2) Players who are trapped, /stuck should get them out from under the shield. (Sometimes it's impossible for groups rescue the player). Or if they beam out, they are allowed to return to the same instance.
3) Some players have difficulty with the Jumping Part, especially the recovery. So the pipes are lowered a tad bit and some additional blocks be added to aid.