Redstone said:
I found the transcript of a briefing, shortly after Reagan's election, that offers a succinct summary of Roswell that makes sense to me (about halfway down).
http://www.serpo.org/release27a.php
Yes, they are just flesh and blood, like a human body. They can be killed. But their spaceships have a force field around them. They can be shot down, but it takes some doing on our part.
"takes some doing"
effen USA SPACE FORCE taking a doing to force fields kill'n bugs HELL YAH!