Iran will reverse engineer the thing just they do with American, Russian, Korean and just about anybody else's technology they can get their hands on. Once they have done that they will try and develop their own version which although will be inferior to the original they will find uses for it. They will probably even arms their own one so they got their own little American based combat UAV. If America wants to stop this and the fiasco with the downed helicopter in Pakistan which has by now been passed onto China then it needs to start incorporating some kind of self destruct mechanism into any classified technology they would like to stay classified. It also means they don't risk the lives of special forces soldiers who they might want to send into enemy territory to capture or destroy the product the enemies now have.
Aden hotel used by Yemen goverment hit by grenade (Reuters)
from the article: Iran state television displays 'downed U.S. surveillance drone'