1. What's the name and purpose of those infantry helmet covers?
2. What's the purpose of those chains at the rear of the Merkava's turret?
1. They’re for camouflage. The hat—called a mitznefet in Hebrew—attaches to a regular combat helmet and obscures its rigid, round shape. As the mitznefet flops about, it takes on an irregular form that’s harder to recognize in a shadow or out of the corner of your eye. The hat also protects against the sun and the moon, which might reflect off the surface of the helmet. A standard mitznefet consists of reversible mesh fabric, with a greenish woodland camouflage print on one side and a brown desert print on the other
2. A skirt of chains with ball weights is installed on the lower half of the turret bustle. Incoming HEAT projectiles detonate on impact with the chains instead of penetrating the turret ring.
USS Harry S. Truman, where having fun not only happens, it's also mandatory.
I have a question regarding the placement of the Ma Deuce. Why did the Israelis mount the M-2 over the barrel of the main gun, and why did they remove the cupola turret that was standard on other M-60s?