Two U.S. jets and two helicopters were hit by Iranian fire on Friday.
President Donald Trump announced "major combat operations" against Iran on Feb. 28, with massive joint U.S.-Israeli strikes attack targeting military and government sites, officials said.
Watch special coverage on Nightline, "War with Iran," each night on ABC and streaming on Disney+ and Hulu.
A U.S. Air Force one-seater A-10 Warthog attack jet also crashed in the Persian Gulf region on Friday, according to a U.S. official.
The pilot aboard was safely rescued, according to a U.S. official.
The aircraft was hit by incoming fire over Iran and crashed in a neighboring allied country, according to another U.S. official.
One crew member aboard the downed fighter jet has been rescued, according to a U.S. official. The aircraft was a two-seater F-15.
The status of the other crew member is unknown, according to the official.
Israeli forces have killed at least 1,368 people and wounded another 4,138 in Lebanon since March 2, according to the Lebanese Ministry of Public Health.
Over the past 24 hours alone, 23 people were killed and 98 others were injured, the health ministry said Friday.
Among those killed were 125 children, 91 women and 53 health sector personnel, according to the health ministry.
French President Emmanuel Macron expressed concern over the war in Iran and suggested that the U.S. is starting to "jeopardize" the world order that it helped build after World War II, he said Friday, while speaking to students at Yonsei University in South Korea.
"Iran is a very bad regime - no discussion about that. I disagree with them on a lot of topics. But I don't believe that we will fix the situation just by bombings or by military operations. Look at what happened with this type of operation in Iraq, in Afghanistan, in Libya - we never delivered. Never. Even after 20 years," Macron said.
"So you have to respect the sovereignty of people. If people want to change a regime, they want to react, step up, they can do so," he said.
