LAN is staffing company, which means that they don't make anything. Their entire work deepens on other companies. So if you work for LAN you are at the mercy of other companies that LAN assign you to. Once those companies don't need you anymore, LAN will fire you as well. Most of their work is field work that other companies employees don't wanna do, so they hire LAN guys. The field work sucks, you will be exposed to: heat, bugs, snakes, swamps and mud. It is not really type of job that would provide you with valuable experiences. So once you start working for LAN, you will find it hard to get job anywhere else.
