The U.S. Air Force has successfully tested a pair of hypersonic missiles created by Lockheed Martin, Reuters reports.

The tests took place off the coast of California. The ARRW missiles were launched from under the wing of a B-52H strategic bomber.

"This second successful test demonstrates ARRW's ability to reach and withstand operational hypersonic speeds, collect crucial data for use in further flight tests, and validate safe separation from the aircraft," Lockheed said in a statement.

Air Force Brigadier General Heath Collins, program executive officer, Armament Directorate, said, "We have now completed our booster test series and are ready to move forward to all-up-round testing later this year."