Both the RU and US have newer standards snowballs. When going down the US hill, there is a set of crates. These crates count as the spawn camp zone for US. RU is not allowed to walk past this point or shoot any US behind the crates. The exceptions for this rule is if the US soldier shoots while behind the line, then they are allowed to be shot even if they hide behind the crate.( if they peak again, you can shoot them). Another exception are helicopters and jets. These vehicles are allowed to fly by these lines however they are not allowed to shoot people behind the line.( problem is rockets have large aoe and might kill people behind crate on accident; if this happens staff should verbally warn him giving them 2 chances. If they continue, warn and a temporary ban from the class.) last exception are snipers. Snipers (including generals) are KOS right when they leave their base ( this was recently added, unless hotshot recently removed it; which I doubt he did. Okay, RU has similar traits. The crate outside RU base is the RU spawn camp zone. RU's zone exceptions are the same as US's. Lastly, RU can't go past US zone to get on their hill so neither can US go on top of RU hill.