AIM-4F Weapon System Evaluator Missile (WSEM): The WSEM is a test equipment item used to evaluate the performance of the fire control system during an airborne simulated attack. This is done by permanently recording the missile preparation signals on a light-sensitive oscillogram. The signals that are recorded on the oscillogram are recorded in normal missile prelaunch time sequence as either an analog or digital trace. When the oscillogram is developed, the analysis of these traces verify the correct timing and magnitude of the signals. The prelaunch signals supplied to the WSEM may either perform the identical functions as in a tactical missile, or may be used to serve particular functions in the recording unit of the WSEM. In either case, these signals are recorded on the oscillogram. RO-104/AJ G Special Weapon Simulator - McDonnell Simulator Rocket (MSR): When installed on the F-106 aircraft, the recorder simulator RO-104/AJ G (MSR) provides a complete in-flight check, and permanent record of the presence of the preparation and firing signals normally applied to an AIR-2A special weapon during an attack run. The complete information for four passes can be recorded. The MSR is installed on the special weapon ejector rack in place of the tactical rocket. The recorded data is obtained without rocket expenditure or telemetering equipment and is available immediately upon completion of flight. The output indications, representing the presence of special weapon signals, appear as numbers and functions photographed on Polaroid-type film. A list of the signals recorded, and the corresponding film indication, appear like this image. ARMAMENT TEST SET (ATS): While the WSEM gave an airborne check of the missile circuits and the MSR gave an airborne check of the rocket circuits, the attached photo of the ATS (Armament Test Set) tested the missile armament on the ground in a high altitude, high speed simulated environment known as Short System Ground Check (SSGC) # 5. The armament could also be manually tested from the 596 unit in the right main wheel well as well as the automatic SSGC # 5 test. Results were displayed on the ATS via lights and tripped circuit breakers. When necessary, successful ATS ground tests could be substituted for airborne verifications when determining qualifications for standing Alert.