The first US observation balloon of World War I is shot down north of the village of Villers sur Marne, France. The French built balloon is manned by members of the 2nd Balloon Co. who both escape safely after the attack by a German pilot flying an Albatros.
The Air Force conducted its first successful test of the Air-launched Rapid Response Weapon, or ARRW, on May 14, snapping a streak of three consecutive failed tests and giving the beleaguered hypersonics program a much needed boost. Off the coast of Southern California, the AGM-183A ARRW separated from the wing…