The man who died in a confrontation with police after he carried out an attack that left five law enforcement officers in Dallas dead and several others wounded was an Army veteran and a reported “loner,” and he was found to have kept bomb-making materials, ballistic vests, rifles, ammunition and a personal journal of combat tactics in his home, according to police and records made public Friday. Micah X. Johnson, 25, a reservist working in carpentry and masonry who deployed to Afghanistan once in 2013, was a former member of an Army engineering company and served in the Individual Ready...