Speed estimation

7-2. Of the weapons discussed in this manual, the M136 AT4 is the best for engaging moving armored vehicles. One of its advantages is the speed of its round, which travels faster and farther than the other shoulder-launched munitions. However, the firer is the key in any engagement, especially a moving target engagement. Once firers learn to estimate speeds and engage moving targets at known ranges, they should rehearse until they achieve a high hit-to-kill ratio. As their abilities improve, the leaders should vary the ranges, speeds, and types of armored vehicles used (Figure 7-1, page 7-2). Trainers and Soldiers develop other methods through practice and are limited only by their imaginations. (Chapter 3 discusses obtaining a sight picture in detail.) Use the following procedures to estimate how far the vehicle travels in 1 second.

• Start when the front end of the vehicle passes the object.

• Count, "One thousand and one" (takes about one second).

• If more than half of the vehicle passes the object, estimate it as a fast-moving vehicle (10 miles per hour or faster). If less than half of the vehicle passes the object, estimate it as a slow-moving vehicle (less than 10 miles per hour).

Figure 7-1. Speed estimation.

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