i said, hi, i am michael, i am going to get you out of here. >> reporter: after rescuing her and another passenger, and then detectives michael delaney and robert rodriguez turned to the sinking plane, assumed there were passengers still trapped, no way everyone survived. >> when i went in the plane and started swimming a bit, i was running into objects that were submerged that i thought or bodies, but it was, in fact, luggage. >> thankfully? >> yeah. >> reporter: but there was one person who knew all 150 passengers were off that plane. >> i went through the airplane from front to back posters to double my sure that there is no one left behind. >> reporter: when the dive team heard that -- >> -- never wavered. >> reporter: the respect mutual. >> they say that people could have floated away and drowned almost unnoticed, otherwise. i was very concerned about that.