President Trump has formally nominated Gen. Michael Guetlein, currently vice chief of space operations, to lead the Golden Dome for America project, codifying a May 20 announcement that will culminate with a Senate hearing to consider the general for one of the most ambitious U.S. military projects ever attempted. Guetlein has held senior roles spanning space acquisition, intelligence integration, missile defense and rapid innovation. His positions include leading Space Systems Command, directing remote sensing, shaping missile defense programs, managing classified...