CALFEX is Combined Arms Live Fire Exercise. In this case, Joint Terminal Attack Controllers assigned or attached to the 173rd Abn. BCT were training in Slovenia. The tanks are Slovenian M84s (a variation of the Russian T-72), the prop planes are Slovenian PC-9s firing the FN M3 .50cal machine gun from pods, and the jets are L-139s, firing either a 23mm gun pod, or rockets. I have no idea who is providing the artillery support.
The FN M3 .50cal is very similar to the familiar Browning M2 .50cal, but as you’ll notice, it’s designed to fire at a much higher rate than the M2.
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