ALIENS - When aliens arrive.....they will come to take like in the past,hope they leave some tools behind this time.

When aliens arrive(again) they will be here to take and not to give that is why we try to explore space because we will be needing space soon or a ww3,and they will land perfectly and not crash,i mean why would they crash after travelling so far,fell asleep behind the wheel?...i dont think so.All the "alien crashes" was not alien it was man\gov experiments.