Tuesday was the first time Waltz faced lawmakers since mistakenly adding a journalist to a private Signal chat used to discuss sensitive military plans.
President Trump ordered U.S. forces to strike three key Iranian nuclear sites in June, a decision the Israeli leader says warrants a Nobel Peace Prize.
Taking off from the U.S. heartland, B-2 stealth bombers, aided by refueling tankers and fighter jets, delivered a total of 420,000 pounds of explosives.