When Fred Senra was a 14-year-old growing up in Cuba, he and his friends considered themselves to be counterrevolutionaries and had some guns.
“We had a fantasy to take out Castro,” said Celita Cabrera, who has known Senra since high school. “Our parents knew better and took us to the U.S.”
Senra, 77, was the first friend Cabrera saw when she arrived in...