Chances are if they exist, and they are hostile, that they would neutralize our planet in one fell swoop, tackle all our countermeasures, and do as they will. However according to HollyWood defeating such a foe requires squads of planes to shoot them down once their forcefields go down (ala Independece Day) or just have a few glasses of water chilling around the house and throw them at their faces (ala Signs).
If they were hostile they would have attacked eons ago.....and if (as some people say) they are bidding their time then there is really nothing much we could do when they attack.
Imagine what defence Cro-Magnon man would have had if a modern army attacked with modern weapons and tactics? Nada, zip, zero, nil! Actually even the most rag tag Afghanistan army armed with two revolvers and a sling shot would most likely rule Cro-Magnon man for whole epochs!
I think the same thing would apply here. If they existed and they attacked what could we do?
And another thought. Let's say that aliens have been doing drive bys on earth in their craft, and (as some of the posts suggest) we have been firing stuff at them, what if such actions cause them to think they are under attack and they 'retaliate.'
Imagine an American Air 747 flying over (let's just say for the sake of argument) Serbia, and it gets shot down by the Serbians. And then a week later a Delta airlines plane also experiences ground fire and is turned into a flaming lawn dart! And then a couple of days later a Gulf Stream jet with an American businesswoman gets shot down.
What would we do? And might aliens act the same way we would if their stuff gets fired at?
Just wondering......
Orrrrrrr.......maybe they are waiting for us to become a bit brighter and more advanced so that we will offer more of a fair fight. Naaaah........they're too smart for that. LOL
I think it was Linda Moulton Howe's book CROP CIRCLES . . . or a comment at the March Aztec conference . . . around the time of the Roswell incident in 1947 and for a few thereafter we lost ?600? planes trying to shoot the disc's down. Has been a pretty closely held secret that we were that actively trying to shoot them down.