Also of interest is the exposed track and the roll hanging off the left side.
The track is exposed because the black rubber shroud has been removed. The
shroud traps water when the APC is swimming and allows for better steering.
However it also traps mud and if enough mud builds up under the shroud it
pushes the track off its rollers. Basically this is bad. Therefore, remove the
shroud and don't go swimming.
The roll hanging on the side is a Rocket Propelled Grenade (RPG) screen. A section of chain link fence with steel posts inside. Erected in front of the track, when it is parked in hostile country, it provides some protection from RPGs. When an incoming rocket hits the wire it either detonates there (before it hits the APC) or it breaks the warhead into little pieces that can do no harm. At least that is the theory and it does work, sometimes. And sometimes is better than never. Most all the tracks carried these fences. The roll is hung on the side rather than across the front because experience proved that when the track hit a mine the fence on the front flipped back into the driver's face. As drivers in 1/61 were all handsome and did not want unsightly scars across their cheeks, the rolls were hung off the sides.