I disagree with this advice...I pretty much never hard lock a target beyond 20nm and certainly never beyond 25-30nm. A 50nm head on shot is exactly when you would fire in TWS, especially if they are high and fast and your aircraft is at 30k+. If you know there are two fighters but the second track has not broken out clearly, then fire on the one solid track that you have and ease into an offset. When the first missile goes active and that guy defends that will break out both aircraft clearly. If you do drop the track shortly before pitbull, then the AIM-54C still has a good chance to acquire the target if he hasn't actually maneuvered much. Whether the first missile hits or not, at least one of the bandits will be defensive. I would save the STT locks for inside 20nm, better yet a sub 10nm ACM cover up shot. See some examples in my videos: