WASHINGTON -- The Pentagon says the United States hit Islamic State of Iraq and Syria (ISIS) targets in Iraq and Syria with 17 airborne strikes on Christmas Day.

The strikes targeting ISIS fighters, facilities and vehicles were carried out by fighter aircraft, bombers and remotely controlled aircraft.The Pentagon said Saturday that five of the strikes were in Syria and 12 in Iraq.

The strikes targeted ISIS tunnels, explosive manufacturing sites and other targets such as bridges and ISIS fighting outposts.

Get Breaking News Delivered to Your Inbox

All U.S. aircraft returned safely.

The strikes were conducted as part of Operation Inherent Resolve, the operation that is designed to target the Islamic State of Iraq and Syria.