It is somewhat uncomfortable. I hope every American in the military industry were given more chance for revenge against terrorists who killed Americans, revenge by contributing to the military for manufacturing the military equipments. Israeli equipments have taken away the opportunity to give chance to more Americans for the revenge. I hope most (if not all) will be Made in USA equipments to be equiped on the weapon to assassinate Osama Bin Laden to give many Americans as possible for the revenge what he has done to our country. This is our job, our fight, our war, our revenge against Islamists what they have done to us, not the Israelis. How would the Israelis feel if they were taken away the opportunity for revenge against Hamas and Hezbolla that has killed Israelis.
I don't think they mind a bit, judging by all the American hardware they use. Dead is dead.
The fact that this murdering bastich is dead, and won't be planning or carrying out any more terrorist acts is good enough for me. I suspect that the Israelis would feel the same way - in fact, they use lots of made-in-US equipment already (F-15s, F16s, Apaches, etc.). Where the stuff is made is really not so important as long as it does the job (unless you are a jihadist, for whom the idea of being killed by a "Joooooooish" or "Evil Zionist" bullet or bomb is cause for apoplexy).