Alaska
Begich, who leads the General Aviation Caucus and serves on the Senate Commerce, Science and Transportation Committee, remains in a tight race against Dan Sullivan, a lieutenant colonel in the Marine Corps Reserves. Sullivan served in the George W. Bush administration's State Department under Condoleeza Rice and on the National Security Council. The U.S. bases its ground-based midcourse defense system at Fort Greeley, not far from Fairbanks. And Alaska is one of six sites where the FAA is studying the use of UAVs in civil airspace. Credits: Office of Sen. Begich and Sullivan for U.S. Senate