What if Iran find a way to stop UAV?

Last november, in 2012, Iran captured an advanced american UAV (RQ-170 “Sentinel“) on its territory; that was quite embarrassing for USAF, the unmanned aircraft was captured intact ant the potential for a technological leak was a real threat. Many hypothesis were considered about how Iranians could get their hands on an intact drone and no official statement has been done from USAF about it.