leader. he was ultimately killed. but just imagine what would have happened had the mission gone wrong. isis has gotten used to fighting u.s. troops when they attack from the air. for months washington has led an air war against isis in iraq and syria. but there was very different. a bold raid into syria into an isis strong hold with u.s. boots on the ground. u.s. officials say american delta force commandos took off from northern iraq in black hawk helicopters and osprey plain helicopter hybrids like these and flew deep into isis territory in eastern syria. no allies on the ground if u.s. forces were captured they risked unthinkable horrors. a jordanian pilot captured by isis was burned alive in a cage. u.s. officials say the americans it target abu sayyaf was a top
forces mission in eastern syria. richard engel has been assessing the significance of this raid into syria. reporter: isis got used to fighting u.s. troops, when they attack from the air. for months, washington led an air war against isis in iraq and syria. but, this was very different. a bold raid into syria into an isis stronghold with u.s. boots on the ground. u.s. officials say americans delta force commandos took off in blackhawk helicopters with helicopter hybrids like these and flew deep into isis territory in eastern syria. it was friday evening. syrian time. no allies on the ground. if u.s. forces were captured, they rising unthinkable horror. a jordanian pilot captured by isis was burned alive in a cage.