Flying a Nieuport 28, Army 1st Lt. Edward V. Rickenbacker, who would go on to be the leading American ace of World War I, records his first solo victory, downing a German Pfalz. Flying with the 94th Aero Squadron, he had recorded a half victory, his first, on April 29.
The Space Development Agency has already awarded contracts for most of the satellites that will form the beginnings of its massive planned constellation in low-Earth orbit, and on May 26 the agency awarded a deal for the ground systems to go with it. General Dynamics Mission Systems won the contract,…