Never waver. Carl Maxie Brashear, the Navy’s first black deep sea diver, must have uttered that mantra repeatedly as he overcame obstacle after obstacle. It steeled him when Navy officials attempted to keep him out of diving classes. It bolstered him when, after his leg was amputated, the Navy brass thought he was crazy to believe he could return as a diver. It must have been a source of pride after receiving major military awards and seeing his life portrayed in the movie, “Men of Honor.” Brashear, 75, died this week at Portsmouth Naval Medical Center, the same hospital where...