You cannot control the Aliens. The movies and fiction all make this very clear. Regardless of their origins, they are Nature in its purest and most savage form. Tooth and claw, the raw power to survive, endure, break free of chains.

Look at this world. Everywhere Life exists, it thrives, even in the harshest conditions. It survives mass extinction, global calamity on a scale humans cannot truly understand.

The Alien—the xenomorph—embodies this, exemplifies it. Neither good nor evil, the Aliens simply live. They grow, they fight, they die, they pass on generations and grow stronger in time. Such raw Nature cannot be controlled, any more than you can control a hurricane, or fire unchecked. Ultimately, they will break your chains, you will lose control, and when the dust settles, Nature in all her savage glory will reign supreme, as she always must.

... unless you're in a Jaeger. In a Jaeger, you can fight a hurricane. You can win.