Unfortunately they would not have a chance to communicate with us, as this interview depicts.

From:
http://www.soc.org/opcam/a_autopsy/alienautopsy.html

Question #7: How was the situation of the site?
Answer: We were told nothing and ordered not to discuss what we had seen. We all knew it was not a spy plane or any other type of plane we had seen before. No one knew how it crashed or where it came from.

Question #8: What did you take at the site?
Answer: I filmed the crash site, also the poor freaks, and we were told to keep back. I filmed the vehicle itself and the area around it. I felt nervous of something I could not understand or explain.

Question #9: How did you communicate with the spacemen?
Answer: The freaks kept crying out and the men were scared but they were trained and they were ordered to go in and treat it like a war situation. Their first job was to recover the objects the freaks were holding just in case they were weapons of some kind. I filmed the assault on the freaks to get these objects. It turned out they were not weapons, but control units of some kind. The freaks didn't want to let them go but they didn't stand a chance, we got 'em. Once the units were secured the freaks were removed.