The Key of S-Jrs (also known as Sky Temple Key 5) is the fifth Sky Temple Key required for access to the Sky Temple in Metroid Prime 2: Echoes. At the Hive Entrance in the Ing Hive, Samus must Screw Attack across to the far ledge, and then use the Light Shaft to reach the higher ledge. Samus must then Screw Attack to the edge directly across from her. Here, she will find the Flying Ing Cache, and destroy it, granting her the Key.