"A cold shot requires different setting than follow-ups," he said.
Vice Adm. Bill Gortney called the simultaneous shots "phenomenal," and President Obama said how "very proud" he was of the job carried out by the military.
But while Humphries praised a job well done, he wasn't surprised by the deadly outcome.
"It's a standard, well executed hostage rescue tactical solution... They had no other choice," Humphries said. "[This was] the only way they get the job done."
"It's not a bunch of cowboys out there," he said. "It was a very controlled situation."