platoon lead per. >> the guy was toxic. >> gallagher was acquitted of premeditated murder when a key witness changed his story and testified under immune tee that he caused the prisoner's death, not gallagher. >> did you suffocate him? >> yes. >> how? >> by holding my thumb over his et tube until he stopped breathing. >> scott described the killing as an act of mercy because he was concerned the boy, a prisoner of iraqi forces, would be tortured by them. gallagher was convicted on a charge of taking a photo with a dead isis fighter and was then demoted in rank. a decision president trump reversed, allowing the s.e.a.l. to retire with honor, even after pentagon leaders urged the president not to interfere. speaking through his attorney, gallagher told cnn, my first