The stage is set for the fourth double execution in the United States this year on June 10.

As Florida inserts a needle to deliver a fatal drug into Anthony Wainwright’s vein, Alabama will strap a mask onto the face of Gregory Hunt and pump him with nitrogen gas until he suffocates.

"It seems to me there's enough days in the year that executions shouldn't have to be stacked on top of each other," said the Rev. Jeff Hood, a death row spiritual adviser who has witnessed nine executions and has to make an "unfathomable" choice between whether to be in person to support Wainwright in Florida or Hunt in Alabama.

Wainwright's and Hunt's cases are unrelated but they were convicted of similar crimes: the rape and murder of innocent women whose families were left shattered.

Wainwright is being executed for the rape and murder of 23-year-old Carmen Gayheart, a married mother of two and nursing student who was kidnapped in broad daylight in a grocery store parking lot. Hunt is being executed for the rape and murder of a woman he had been dating for a month named Karen Lane.