In an unusual trial, the N.A.A.C.P. has sought to show a school board’s “racist intent” by proving that the names of Robert E. Lee and Stonewall Jackson can’t be separated from white supremacy.

Over the past week, C-17 heavy-lift cargo planes, which usually transport troops and equipment, flew to Puerto Rico at least 16 times, according to flight tracking data reviewed by The New York Times.

One friend said Claudio Neves Valente appeared to live a detached life, upset that “he couldn’t be the genius he thought he should be.”